NEOMAMMILLARIA. 
KEY TO SPECIES—continued. 
CC. Seeds black. 
D. Fruit elongated, clavate, ripening quickl 
E. Seeds not rugose. q * 
F. Plants usually small; spines setaceous to delicately acicular. 
Central spines yellow. 
Central spines glabrous.....................0. I 
Central spines pubescent. = $85 # © °9- 
Flowers white. ...... 0.0... cece eee e eee e tenes 110 
Flowers yellowish............0..ceecceeeeceeeseee eee. IIT. 
Central spines red to brown. 
Outer perianth-segments ciliate. 
Central spines shorter than flower; perianth-segments acute 112. 
Central spines longer than flower; perianth-segments obtuse 113. 
Outer perianth-segments entire. 
Axils of tubercles setose. 
Inner perianth-segments white to yellowish. 
Central spines 3 or 4. 
Radial spines about 25; flowers 2 cm. long......... 114. 
Radial spines about 20; flowers 1 cm. long......... 115. 
Central spines 7 t09......... 2.0 ce eee eee eee eee 116. 
Inner perianth-segments red or reddish. 
Radial spines weak and hair-like. 
Central spines several............... cece eee eens 117. 
Central spine solitary............ 0... e cece eee 118. 
Radial spines stiff. 
Radial spines glabrous................e cess eeeeee 119. 
Radial spines pubescent...........-. 0s cess eens 120. 
Axils of tubercles not setose. 
Flowers 2.2 cm. long or more. 
Central spines solitary.......... 60s eee e eee renee 121. 
Central spines 3.........0 0c eee eect eee reece es 122. 
Flowers 1 to 1.5 cm. long. 
Plants cespitose..........0 ee cece eee e eee eect tenes 123. 
Plants solitary. 
Inner perianth-segments acuminate.............-. 124. 
: Inner perianth-segments acute only............--- 125. 
FF. Plants stout; central spines at least stout-acicular to subulate. 
G. Outer perianth-segments ciliate. 
Fruit purple, ovoid to globular. 
Radial spines 15 or less; fruit large (25 mm. long)..... 126. 
Radial spines 20 to 30; fruit 10 to 15 mm. long....... 127. 
Fruit scarlet, clavate. 
Outer perianth-segments long-ciliate........-.---++-- 128. 
Other perianth-segments and upper scales short-ciliate. 
Perianth rotate; stigma-lobes red.........-+--++++ 129. 
Perianth campanulate; stigma-lobes green. 
Flowers white. ........ 0-0 eee cece eee eer ete 130. 
Flowers purple to pinkish. 
Radial spines often as many as 30. 
Inner perianth-segments acuminate......... 131. 
Inner perianth-segments usually obtuse or 
132. 
rounded..........-++- sete eee neeces 
Radial spines often as few as 12; inner perianth- 
segments acute......----ereereeeee 133. 
GG. Perianth-segments not ciliate. - 
H. Setae in axils of tubercles. 
I. Seeds constricted above base. 
J. Flowers greenish or pink, and small. 
K. Flowers greenish, 10 to 12 mm. long; cen- 
tral spines yellowish to reddish...... 134. 
KK. Flowers pink, 20 mm. long or more, cen- 
tral spines dark brown......------+-- 135. 
JJ. Flowers nearly white, seeds much larger...... 136. 
II. Seeds not constricted above base. ; 
Central spines several; flowers yellowish......- 137. 
Central spinesusually solitary ; flowers rose-colored. 138. 
HH. Setae wanting in axils of tubercles. 
I. Flowers rotate........0eeeeereer errr rst 139. 
II. Flowers campanulate. 
Plants globose. 
Flowers white.....--- eee e eee eer e eee e esse 140. 
Flowers pink to purplish. 
Inner perianth-segments obtuse......- vse 141. 
Inner perianth-segments acute to acuminate. 142. 
Plants slender, elongated and cylindric. 
69 
N. pygmaea 
N. wildti 
N. seideliana 
N. barbata 
N. mercadensis 
N. kunzeana 
N. hirsuta 
N. multihamata 
N. longicoma 
N. bocasana 
N. multiformis 
N. schetdwetleriana 
N. saffordi 
N. schelhaset 
N. glochidiata 
N. trichacantha 
N. painteri 
N. wrightit 
N. viridiflora 
N 
. wilcoxit 
N. mainae 
N. 
. boedekeriana 
N. microcarpa 
N. milleri 
N. sheldonit 
N. armillata 
N. fraileana 
N. swinglet 
N. dioica 
N. goodridget 
N. zephyranthoides 
N. carretit 
N. jaliscana 
N. bombycina 
. N. occidentalis 
. N. fasciculata 
N. nelsonit 
. N. longiflora 
Flowers small, pinkish. ...-.--++++srserrttt 143 
Flowers large, purplish. ....--++++++errrre 144 
EE. Seeds rugose (perhaps a generic type) ae sa), Feeceenenetey 145. 
DD. Fruit depressed, long-persisting (perhaps a g e) celina: 150, xanthine 
AAA. Species not grouped: 147, N. tacubayensis; 148, N. umbrina; 149, 
