202 



ths CACTAC^AI^. 



i 



228. Opuntia palmadora sp. nov. 



Plant often 3 meters high, sometimes even 5, but often low; trunk 

 sometimes 9 cm. in diameter, sometimes with brown, smooth bark, but 

 usually very spiny; branches numerous, usually erect, at times forming a 

 compact, almost globular top, at other times quite open; joints unusually 

 thin and narrow, i to 1.5 dm. long, generally erect, very spiny; leaves 

 subulate, minute, 3 to 4 mm, long, green with reddish tips, found only on 

 very young joints; areoles filled with white wool; spines usually i to 4, 

 sometimes 6, from an areole, all yellow at first, in age white, the largest 

 one porrect, 3 cm. long; petals erect or only slightly spreading, brick-red 

 in color; stamens short, erect; filaments orange-colored; style cream-col- 

 ored; stigma-lobes white; ovary broadly turbinate, 2 cm. long, tubercu- 

 late; fruit smalL 



7, 8, 1915 (No. 19787). 



J 



common in the semiarid 



it 



palmadora or palmatoria. Johnston and Tryon 



name 



Commission 



1914 



Figure 250 represents iointsof the type plant; figfure 2=;i is from 



ild plant from which t\ 



Series 26. SPINOSISSIMAE. 



Erect 



i 



\ 



J 



densely spiny trunks, the ultimate branches spreading or divaricate, flat, -.^ 



usually elongated, spiny or sometimes unarmed; flowers small, yellow, * Fig. 250.— o. palmadora. 



J 



orange or red, or changing from yellow to red; fruit fleshy, 

 of the West - - — ■ 



We 



The series represents the genus Consolea of Lemaire. 



Fig. 251. 



Opuntia palmadora. 



Brazil. 



A thicket in Bahia» 



% 'f 



■:< 



^■ 



Fig. 252. — Opuntia nashii 



Areoles of the joints distant. 2 to 4 cm. apart. 

 Spines few. 3 cm. long or less, or none. 



Key to Species. 



Areoles elevated, bearing 2 to 5 grayish spines 3 to 6 cm. lone 

 Areoles scarcely elevated, spineless or with i to 4 weak yellow spines i to 2 em' lone" ' ' 

 Spines, when present, many, the older up to 12 cm lone ^' ' ' 



Areoles of the joints closer together, i to 1.5 cm. apart 



Spines of the trunk-areoles, or most of them, deflexed. 



229 

 230 

 231 



O. nashii 

 O. bahamana 

 0, macracantha 



Young spines straw-colored or whitish; plant up to s m tall 

 Young spines purple; plant 6 dm. high or less 



Spines of the trunk-areoles, when present, spreading. 



232 

 233 



Jomts disdnctly reticulate-areolate, light green; ovary prominently tuberculate 

 Joints indistinctly reticulate-areolate, mostly dark ereen or reHdi.h • L' .? i'^„ f.^f. 



green or reddish; ovary low-tuberciilate 



234- 

 235- 



O. spinosissima 

 O. millspaughii 



0, moniliformis 

 O. rnhescens 



