Synonymous genera:
- Morangaya G.D. Rowley (1974)
1

2

3

4

5
![/ W. Curtis, Bot. Mag., ser. 2, vol. 2(): : t. 32 (1985) [C. King]](../ILLUSTRATIONS_thumbnails_small/445614.jpg)
6

7
![- [Echinocereus rigidissimus variety rubispinus (G.Frank & A.B.Lau) N.P.Taylor] / W. Curtis, Bot. Mag., ser. 2, vol. 1(): : t. 24, fig. 2 (1984) [C. King]](../ILLUSTRATIONS_thumbnails_small/444739.jpg)
8
![Echinocereus berlandieri (Engelm.) J.N.Haage / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 1 : t. 37 (1900) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183663.jpg)
9
![Echinocereus fendleri (Engelm.) Rümpler / N.L. Britton, J.N. Rose, Cact., vol. 3 : t. 4 (1922) [M.E. Eaton]](../ILLUSTRATIONS_thumbnails_small/51082.jpg)
10
![Echinocereus fendleri (Engelm.) Rümpler / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 3 : t. 143 (1910) [J. Pohl]](../ILLUSTRATIONS_thumbnails_small/183770.jpg)
11
![Echinocereus papillosus Linke ex C.F.Först. & Rümpler / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 2 : t. 115 (1905) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183742.jpg)
12
![Echinocereus scheeri (Salm-Dyck) Scheer / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 1 : t. 14 (1900) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183639.jpg)
13
![Echinocereus enneacanthus Engelm. [Echinocereus blanckii (Poselg.) Palmer] / Rev. Hort. (Paris), ser. 4, vol. 37 (ANNÉE - 1865): (1866)](../ILLUSTRATIONS_thumbnails_small/315928.jpg)
14
![Echinocereus enneacanthus Engelm. [Echinocereus blanckii (Poselg.) Palmer] / N.L. Britton, J.N. Rose, Cact., vol. 3 : t. 3 (1922) [M.E. Eaton]](../ILLUSTRATIONS_thumbnails_small/51079.jpg)
15
![Echinocereus enneacanthus Engelm. [Echinocereus blanckii (Poselg.) Palmer] / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 2 : t. 70 (1905) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183697.jpg)
16
![Echinocereus polyacanthus Engelm. [Echinocereus acifer (Otto) Lemaire in Forster] / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 2 : t. 106 (1905) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183734.jpg)
17
![Echinocereus triglochidiatus Engelm. [Cereus mojavensis Engelm. & Bigelow] / W. Curtis, Bot. Mag., vol. 126 [ser. 3, vol. 56]: t. 7705 (1900) [M. Smith]](../ILLUSTRATIONS_thumbnails_small/5172.jpg)
18
![Echinocereus coccineus Engelm. / N.L. Britton, J.N. Rose, Cact., vol. 3 : t. 2 (1922) [M.E. Eaton]](../ILLUSTRATIONS_thumbnails_small/51072.jpg)
19
![Echinocereus dasyacanthus Engelm. / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 2 : t. 81 (1905) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183709.jpg)
20
![Echinocereus grandis Britton & Rose / N.L. Britton, J.N. Rose, Cact., vol. 3 : t. 3 (1922) [M.E. Eaton]](../ILLUSTRATIONS_thumbnails_small/51078.jpg)
21

22
![Echinocereus knippelianus Liebner / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 1 : t. 12 (1900) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183637.jpg)
23
![Echinocereus knippelianus Liebner / Monatsschr. Kakteenk., vol. 5 : p. 170 (1895) [Zambony]](../ILLUSTRATIONS_thumbnails_small/383598.jpg)
24
![Echinocereus maritimus (M.E.Jones) Schumann / N.L. Britton, J.N. Rose, Cact., vol. 3 : t. 2 (1922) [M.E. Eaton]](../ILLUSTRATIONS_thumbnails_small/51075.jpg)
25
![Echinocereus polyacanthus Engelm. / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 2 : t. 66 (1905) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183693.jpg)
26
![Echinocereus pulchellus (Mart.) Schumann / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 1 : t. 33 (1900) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183659.jpg)
27
![Echinocereus sciurus (K.Brandegee) Britton & Rose / N.L. Britton, J.N. Rose, Cact., vol. 3 : t. 4 (1922) [M.E. Eaton]](../ILLUSTRATIONS_thumbnails_small/51080.jpg)
28
![Echinocereus subinermis Salm-Dyck ex Scheer / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 1 : t. 3 (1900) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183628.jpg)
29

30
![Echinocereus viridiflorus Engelm. / N.L. Britton, J.N. Rose, Cact., vol. 3 : t. 2 (1922) [M.E. Eaton]](../ILLUSTRATIONS_thumbnails_small/51074.jpg)
31

32
![Echinocereus adustus Engelm. [Echinocereus adustus variety schwarzii (A.B.Lau) N.P.Taylor] / W. Curtis, Bot. Mag., ser. 2, vol. 2(): : t. 35 (1985) [C. King]](../ILLUSTRATIONS_thumbnails_small/445617.jpg)
33
![[Echinocereus chisoensis variety fobeanus (Oehme) N.P.Taylor] / W. Curtis, Bot. Mag., ser. 2, vol. 2(): : p. 260 (1985)](../ILLUSTRATIONS_thumbnails_small/445566.jpg)
34
![[Echinocereus chisoensis variety fobeanus (Oehme) N.P.Taylor] / W. Curtis, Bot. Mag., ser. 2, vol. 2(): : t. 33 (1985) [C. King]](../ILLUSTRATIONS_thumbnails_small/445615.jpg)
35
![Echinocereus dasyacanthus Engelm. [Echinocereus pectinatus variety dasyacanthus (Engelm.) W.H.Earle ex N.P.Taylor] / W. Curtis, Bot. Mag., ser. 2, vol. 1(): : t. 24, fig. 1 (1984) [C. King]](../ILLUSTRATIONS_thumbnails_small/444575.jpg)
36
![Echinocereus engelmannii (Parry ex Engelm.) Lemaire / W. Curtis, Bot. Mag., ser. 2, vol. 2(): : t. 31 (1985) [C. King]](../ILLUSTRATIONS_thumbnails_small/446136.jpg)
37
![Echinocereus fasciculatus (Engelm. ex B.D.Jacks.) L.D.Benson [Echinocereus fendleri variety fasciculatus (Engelm. ex B.D.Jacks.) N.P.Taylor] / W. Curtis, Bot. Mag., ser. 2, vol. 2(): : p. 252, fig. A-D (1985)](../ILLUSTRATIONS_thumbnails_small/445564.jpg)
38
![Echinocereus fasciculatus (Engelm. ex B.D.Jacks.) L.D.Benson [Echinocereus fendleri variety fasciculatus (Engelm. ex B.D.Jacks.) N.P.Taylor] / W. Curtis, Bot. Mag., ser. 2, vol. 2(): : t. 31 (1985) [C. King]](../ILLUSTRATIONS_thumbnails_small/445613.jpg)
39

40

41
![Echinocereus pectinatus (Scheidw.) Engelm. / W. Curtis, Bot. Mag., ser. 2, vol. 20(): : p. 180 (2003) [W.H. Fitch]](../ILLUSTRATIONS_thumbnails_small/443240.jpg)
42
![[Echinocereus polyacanthus variety densus (Regel) N.P.Taylor] / W. Curtis, Bot. Mag., ser. 2, vol. 1(): : t. 20 (1984) [C. King]](../ILLUSTRATIONS_thumbnails_small/444571.jpg)
43

44
![Echinocereus poselgeri Lemaire / W. Curtis, Bot. Mag., ser. 2, vol. 2(): : t. 34 (1985) [C. King]](../ILLUSTRATIONS_thumbnails_small/445616.jpg)
45

46
![Echinocereus pulchellus (Mart.) Schumann [Echinocereus pulchellus variety weinbergii (Weing.) N.P.Taylor] / W. Curtis, Bot. Mag., ser. 2, vol. 2(): : t. 36, fig. 1 (1985) [C. King]](../ILLUSTRATIONS_thumbnails_small/445618.jpg)
47

48
![Echinocereus pulchellus (Mart.) Schumann [] / W. Curtis, Bot. Mag., ser. 2, vol. 2(): : p. 271, fig. H (1985)](../ILLUSTRATIONS_thumbnails_small/446134.jpg)
49
![Echinocereus pulchellus (Mart.) Schumann / W. Curtis, Bot. Mag., ser. 2, vol. 2(): : t. 36, fig. 2 (1985) [C. King]](../ILLUSTRATIONS_thumbnails_small/446137.jpg)
50
![Echinocereus russanthus D.Weniger [Echinocereus chloranthus variety russanthus (Weniger) Lamb. ex Rowley] / W. Curtis, Bot. Mag., ser. 2, vol. 1(): : p. 168 (1984)](../ILLUSTRATIONS_thumbnails_small/444553.jpg)
51
![Echinocereus russanthus D.Weniger [Echinocereus chloranthus variety russanthus (Weniger) Lamb. ex Rowley] / W. Curtis, Bot. Mag., ser. 2, vol. 1(): : t. 23 (1984) [C. King]](../ILLUSTRATIONS_thumbnails_small/444574.jpg)
52
![[Echinocereus scheeri variety gentryi (Clover) N.P.Taylor] / W. Curtis, Bot. Mag., ser. 2, vol. 1(): : p. 153, fig. A-D (1984)](../ILLUSTRATIONS_thumbnails_small/444550.jpg)
53
![Echinocereus scheeri (Salm-Dyck) Scheer [Echinocereus scheeri variety gentryi (Clover) N.P.Taylor] / W. Curtis, Bot. Mag., ser. 2, vol. 1(): : t. 19 (1984)](../ILLUSTRATIONS_thumbnails_small/444569.jpg)
54

55
![Echinocereus stramineus (Engelm.) F.Seitz / W. Curtis, Bot. Mag., ser. 2, vol. 1(): : t. 21 (1984) [C. King]](../ILLUSTRATIONS_thumbnails_small/444572.jpg)
56

57
![Echinocereus viereckii Werderm. / W. Curtis, Bot. Mag., ser. 2, vol. 1(): : t. 22 (1984) [C. King]](../ILLUSTRATIONS_thumbnails_small/444573.jpg)
58
![Echinocereus chloranthus (Engelm.) J.N.Haage [Echinocereus chloranthus Rumpler] / N.L. Britton, J.N. Rose, Cact., vol. 3 : p. 16, t. 2 (1922) [M.E. Eaton]](../ILLUSTRATIONS_thumbnails_small/51073.jpg)
59
![Echinocereus coccineus Engelm. [Cereus paucispinus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 56 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71704.jpg)
60
![Echinocereus coccineus Engelm. [Cereus phoeniceus Engelm.] / J. Torrey, Pacif. Railr. Rep., vol. 4 fasicle 3, : t. 4 (1853-1856) [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71747.jpg)
61
![Echinocereus coccineus Engelm. [Cereus paucispinus Engelm.] / W. Curtis, Bot. Mag., vol. 110 [ser. 3, vol. 40]: t. 6774 (1884) [M. Smith]](../ILLUSTRATIONS_thumbnails_small/4224.jpg)
62
![Echinocereus engelmannii (Parry ex Engelm.) Lemaire [Echinocereus engelmannii (Parry ex Engelm.) Rumpler] / N.L. Britton, J.N. Rose, Cact., vol. 3 : t. 5 (1922) [M.E. Eaton]](../ILLUSTRATIONS_thumbnails_small/51085.jpg)
63
![Echinocereus pentalophus (DC.) Lemaire [Cereus procumbens Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 59 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71707.jpg)
64
![Echinocereus pentalophus (DC.) Lemaire [Cereus procumbens Engelm.] / W. Curtis, Bot. Mag., vol. 117 [ser. 3, vol. 47]: t. 7205 (1891) [M. Smith]](../ILLUSTRATIONS_thumbnails_small/4670.jpg)
65
![Echinocereus pentalophus (DC.) Lemaire [Echinocereus pentalophus (DC.) Rumpler] / N.L. Britton, J.N. Rose, Cact., vol. 3 : p. 21, t. 3 (1922) [M.E. Eaton]](../ILLUSTRATIONS_thumbnails_small/51076.jpg)
66
![Echinocereus polyacanthus Engelm. [Echinocereus leeanus (Hook.) Lemaire] / K.M. Schumann, Gesamtbeschr. Kakt.: p. 288, t. 49 (1899) [T. Guerke]](../ILLUSTRATIONS_thumbnails_small/121102.jpg)
67
![Echinocereus poselgeri Lemaire [Cereus tuberosus Poselg.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): p. 39, t. 59, fig. 12 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71737.jpg)
68
![Echinocereus roetteri (Engelm.) Engelm. ex Rümpler [Cereus roetteri Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 41 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71735.jpg)
69
![Echinocereus triglochidiatus Engelm. [Cereus gonacanthus Engelm. & Bigelow] / The Garden, vol. 22 : (1882)](../ILLUSTRATIONS_thumbnails_small/199686.jpg)
70
![Echinocereus triglochidiatus Engelm. [Cereus hexaedrus Engelm. & Bigelow] / J. Torrey, Pacif. Railr. Rep., vol. 4 fasicle 3, : t. 5 (1853-1856) [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71748.jpg)
71
![Echinocereus triglochidiatus Engelm. [Cereus gonacanthus Engelm. & Bigelow] / J. Torrey, Pacif. Railr. Rep., vol. 4 fasicle 3, : t. 5 (1853-1856) [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71775.jpg)
72
![Echinocereus pentalophus (DC.) Lemaire [Cereus pentalophus var. subarticulatus DC.] / W. Curtis, Bot. Mag., vol. 65 [ser. 2, vol. 12]: t. 3651 (1839) [n.a.]](../ILLUSTRATIONS_thumbnails_small/11.jpg)
73
![Echinocereus berlandieri (Engelm.) J.N.Haage [Cereus berlandieri Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 58 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71706.jpg)
74
![Echinocereus berlandieri (Engelm.) J.N.Haage [Cereus berlandieri Engelm.] / The Garden, vol. 28 : (1885)](../ILLUSTRATIONS_thumbnails_small/200060.jpg)
75
![Echinocereus berlandieri (Engelm.) J.N.Haage [Cereus blanckii Poselg.] / The Garden, vol. 28 : (1885)](../ILLUSTRATIONS_thumbnails_small/200063.jpg)
76
![Echinocereus chloranthus (Engelm.) J.N.Haage [Cereus chloranthus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 37 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71685.jpg)
77
![Echinocereus chloranthus (Engelm.) J.N.Haage [Cereus chloranthus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 38 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71686.jpg)
78
![Echinocereus coccineus Engelm. [Echinocereus paucispinus (Engelm.) Engelm. ex Rümpler] / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 3 : t. 124 (1910) [J. Pohl]](../ILLUSTRATIONS_thumbnails_small/183751.jpg)
79
![Echinocereus coccineus Engelm. [Echinocereus kunzei Gürke] / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 3 : t. 128 (1910) [J. Pohl]](../ILLUSTRATIONS_thumbnails_small/183755.jpg)
80
![Echinocereus dasyacanthus Engelm. [Cereus dasyacanthus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 39 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71687.jpg)
81
![Echinocereus dasyacanthus Engelm. [Cereus dasyacanthus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 40 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71688.jpg)
82
![Echinocereus dasyacanthus Engelm. [Cereus dasyacanthus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 41 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71689.jpg)
83
![Echinocereus engelmannii (Parry ex Engelm.) Lemaire [Cereus engelmannii Parry ex Engelm.] / E.A. von Regel, Gartenflora, vol. 33 : t. 1174 (1884)](../ILLUSTRATIONS_thumbnails_small/175114.jpg)
84
![Echinocereus engelmannii (Parry ex Engelm.) Lemaire [Cereus engelmannii Parry ex Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 57 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71705.jpg)
85
![Echinocereus enneacanthus Engelm. [Cereus enneacanthus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 49 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71697.jpg)
86
![Echinocereus enneacanthus Engelm. [Cereus dubius Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 50 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71698.jpg)
87
![Echinocereus enneacanthus Engelm. [Cereus enneacanthus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 48 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71736.jpg)
88
![Echinocereus fendleri (Engelm.) Rümpler [Cereus fendleri Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 51 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71699.jpg)
89
![Echinocereus fendleri (Engelm.) Rümpler [Cereus fendleri Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 52 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71700.jpg)
90
![Echinocereus fendleri (Engelm.) Rümpler [Cereus fendleri Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 53 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71701.jpg)
91
![Echinocereus fendleri (Engelm.) Rümpler [Cereus fendleri Engelm.] / W. Curtis, Bot. Mag., vol. 106 [ser. 3, vol. 36]: t. 6533 (1880) [M. Smith]](../ILLUSTRATIONS_thumbnails_small/3954.jpg)
92
![Echinocereus longisetus (Engelm.) Lemaire [Cereus longisetus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 45 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71693.jpg)
93
![Echinocereus pectinatus (Scheidw.) Engelm. [Echinocactus pectiniferus Lemaire] / W. Curtis, Bot. Mag., vol. 73 [ser. 3, vol. 3]: t. 4296 (1847) [W.H. Fitch]](../ILLUSTRATIONS_thumbnails_small/1074.jpg)
94
![Echinocereus pectinatus (Scheidw.) Engelm. [Echinocactus pectiniferus Lemaire] / A.C. Lemaire, Iconogr. Descr. Cact.: t. 7 (1841-1847)](../ILLUSTRATIONS_thumbnails_small/79666.jpg)
95
![Echinocereus pectinatus (Scheidw.) Engelm. [Echinopsis pectinata (Scheidw.) J.H.Fennell] / L.K.G. Pfeiffer, F. Otto, Abbild. Beschr. Cact., vol. 2 : t. 10 (1846)](../ILLUSTRATIONS_thumbnails_small/107866.jpg)
96
![Echinocereus pectinatus (Scheidw.) Engelm. [Echinocactus pectiniferus Lemaire] / L.B. Van Houtte, Fl. Serres, vol. 2 : t. 7 (1846) [n.a.]](../ILLUSTRATIONS_thumbnails_small/51366.jpg)
97
![Echinocereus pectinatus (Scheidw.) Engelm. [Cereus pectinatus (Scheidw.) Engelm.] / E.A. von Regel, Gartenflora, vol. 23 : t. 813 (1874)](../ILLUSTRATIONS_thumbnails_small/325036.jpg)
98
![Echinocereus pectinatus (Scheidw.) Engelm. [Echinocactus pectiniferus Lemaire] / W. Curtis, Bot. Mag., vol. 71 [ser. 3, vol. 1]: t. 4190 (1845) [W.H. Fitch]](../ILLUSTRATIONS_thumbnails_small/41421.jpg)
99
![Echinocereus pectinatus (Scheidw.) Engelm. [Echinopsis pectinata (Scheidw.) J.H.Fennell] / L.K.G. Pfeiffer, F. Otto, Abbild. Beschr. Cact. (Coloured version), vol. 2 : p. 10, t. 10 (1839)](../ILLUSTRATIONS_thumbnails_small/205522.jpg)
100
![Echinocereus pentalophus (DC.) Lemaire [Echinocereus leptacanthus (Salm-Dyck) Schumann] / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 1 : t. 15 (1900) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183640.jpg)
101
![Echinocereus pentalophus (DC.) Lemaire [Cereus leptacanthus DC. ex Pfeiff.] / Rev. Hort. (Paris), ser. 4, vol. 37 (ANNÉE - 1865): (1866)](../ILLUSTRATIONS_thumbnails_small/315936.jpg)
102
![Echinocereus polyacanthus Engelm. [Cereus polyacanthus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 54 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71702.jpg)
103
![Echinocereus polyacanthus Engelm. [Cereus polyacanthus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 55 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71703.jpg)
104
![Echinocereus polyacanthus Engelm. [Cereus leeanus Hook.] / W. Curtis, Bot. Mag., vol. 75 [ser. 3, vol. 5]: t. 4417 (1849) [W.H. Fitch]](../ILLUSTRATIONS_thumbnails_small/894.jpg)
105
![Echinocereus polyacanthus Engelm. [Cereus leeanus Hook.] / T. Moore, W.P. Ayres, Gard. Mag. Bot.: (1850-1851)](../ILLUSTRATIONS_thumbnails_small/445376.jpg)
106
![Echinocereus polyacanthus Engelm. [Cereus leeanus Hook.] / Monogr. Trochilidae, vol. 5 : t. 285 (1861) [J. Gould & H.C. Richter]](../ILLUSTRATIONS_thumbnails_small/160454.jpg)
107
![Echinocereus polyacanthus Engelm. [Echinocereus durangensis Rumpler] / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 3 : t. 179 (1910) [J. Pohl]](../ILLUSTRATIONS_thumbnails_small/183799.jpg)
108
![Echinocereus poselgeri Lemaire [Echinocereus tuberosus Poselg. ex Rümpler] / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 1 : t. 38 (1900) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183664.jpg)
109
![Echinocereus pulchellus (Mart.) Schumann [Echinocactus pulchellus Mart.] / Nova Acta Phys.-Med. Acad. Caes. Leop.-Carol. Nat. Cur., vol. 16(): : t. 23, fig. 2 (1833) [unsigned]](../ILLUSTRATIONS_thumbnails_small/392234.jpg)
110
![Echinocereus reichenbachii (Terscheck) J.N.Haage [Echinocereus caespitosus (Engelm.) Engelm.] / C.F. Förster, T. Rümpler, Handb. Cacteenk., ed. 2, vol. 2 : t. 138 (1886)](../ILLUSTRATIONS_thumbnails_small/118214.jpg)
111
![Echinocereus reichenbachii (Terscheck) J.N.Haage [Cereus caespitosus Engelm. & A. Gray] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 43 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71691.jpg)
112
![Echinocereus reichenbachii (Terscheck) J.N.Haage [Cereus caespitosus Engelm. & A. Gray] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 44 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71692.jpg)
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![Echinocereus reichenbachii (Terscheck) J.N.Haage [Cereus caespitosus Engelm. & A. Gray] / Ann. Missouri Bot. Gard., vol. 73 : p. 507, fig. 1.1 (1986) [G. Engelmann]](../ILLUSTRATIONS_thumbnails_small/275746.jpg)
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![Echinocereus reichenbachii (Terscheck) J.N.Haage [Cereus caespitosus Engelm. & A. Gray] / W. Curtis, Bot. Mag., vol. 109 [ser. 3, vol. 39]: t. 6669 (1883) [M. Smith]](../ILLUSTRATIONS_thumbnails_small/4161.jpg)
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![Echinocereus roetteri (Engelm.) Engelm. ex Rümpler [Echinocereus lloydii Britton&Rose] / N.L. Britton, J.N. Rose, Cact., vol. 3 : t. 4 (1922) [M.E. Eaton]](../ILLUSTRATIONS_thumbnails_small/51083.jpg)
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![Echinocereus roetteri (Engelm.) Engelm. ex Rümpler [Echinocereus lloydii Britton&Rose] / M.V. Walcott, N. Amer. Wild Fl., vol. 2 : t. 155 (1925-1927)](../ILLUSTRATIONS_thumbnails_small/177836.jpg)
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![Echinocereus scheeri (Salm-Dyck) Scheer [Echinocereus salm-dyckianus Scheer] / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 1 : t. 29 (1900) [Toni Gürke]](../ILLUSTRATIONS_thumbnails_small/183655.jpg)
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![Echinocereus scheeri (Salm-Dyck) Scheer [Echinocereus salm-dyckianus Scheer] / E.A.J. De Wildeman, Icon. Horti Then., vol. 6 : t. 202 (1906-1909) [A.R. d’Apreval]](../ILLUSTRATIONS_thumbnails_small/415735.jpg)
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![Echinocereus scheeri (Salm-Dyck) Rumpler [Cereus scheerii Salm-Dyck] / W. Curtis, Bot. Mag., vol. 132 [ser. 4, vol. 2]: t. 8096 (1906) [M. Smith]](../ILLUSTRATIONS_thumbnails_small/6769.jpg)
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![Echinocereus stramineus (Engelm.) F.Seitz [Cereus stramineus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 46 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71694.jpg)
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![Echinocereus stramineus (Engelm.) F.Seitz [Cereus stramineus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 47 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71695.jpg)
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![Echinocereus stramineus (Engelm.) F.Seitz [Cereus stramineus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 48 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71696.jpg)
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![Echinocereus triglochidiatus Engelm. [Cereus triglochidiatus Engelm.] / J. Torrey, Pacif. Railr. Rep., vol. 4 fasicle 3, : t. 4 (1853-1856) [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71772.jpg)
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![Echinocereus viridiflorus Engelm. [Cereus viridiflorus Engelm.] / Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 36 () [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71684.jpg)
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![Echinocereus viridiflorus Engelm. [Cereus viridiflorus Engelm.] / W. Curtis, Bot. Mag., vol. 125 [ser. 3, vol. 55]: t. 7688 (1899) [M. Smith]](../ILLUSTRATIONS_thumbnails_small/5115.jpg)
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![Echinocereus pectinatus (Scheidw.) Engelm. [Echinocereus pectinatus var. robustus Bauer] / E.A. von Regel, Gartenflora, vol. 39 : t. 1331 (1890)](../ILLUSTRATIONS_thumbnails_small/175204.jpg)
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![Echinocereus engelmannii (Parry ex Engelm.) Lemaire [Cereus engelmannii var. variegatus Engelm. & J.M.Bigelow] / J. Torrey, Pacif. Railr. Rep., vol. 4 fasicle 3, : t. 5 (1853-1856) [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71776.jpg)
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![Echinocereus engelmannii (Parry ex Engelm.) Lemaire [Cereus engelmannii var. chrysocentrus Engelm. & J.M.Bigelow] / J. Torrey, Pacif. Railr. Rep., vol. 4 fasicle 3, : t. 5 (1853-1856) [P. Roetter]](../ILLUSTRATIONS_thumbnails_small/71777.jpg)
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![xx Echinocereus cinerascens (DC.) Lemaire [Echinocactus chlorophthalmus Hook.] / W. Curtis, Bot. Mag., vol. 74 [ser. 3, vol. 4]: t. 4373 (1848) [W.H. Fitch]](../ILLUSTRATIONS_thumbnails_small/1066.jpg)
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![xx Echinocereus fendleri (Engelm.) Rümpler [Echinocereus hempelii Fobe] / K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 3 : t. 142 (1910) [J. Pohl]](../ILLUSTRATIONS_thumbnails_small/183769.jpg)
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![xx Echinocereus reichenbachii (Terscheck) J.N.Haage [Echinocereus baileyi Rose] / Addisonia, vol. 7 : t. 245 (1922) [M.E. Eaton]](../ILLUSTRATIONS_thumbnails_small/163225.jpg)
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