1148 



OPUNTIA 



cro^'deil, with line, gray wool aud very numerous goiden 

 yellow bristles of unequal lengtlj ; spines 3-fi, rarely 

 none, on old stems occasionally 40 or more, unequal, 

 angular, golden yellow, deflexed, usually 1 in. or less 

 long: fls. yellow, 2-3 in. In diam: fr. deep purple, moder- 



1546 Hedge of Opunt : 

 ately bribtl 1111 n 1 

 globose ; d 

 Southwest U 



17. pyonacdntha En elm An upr ght moderat h 

 branched pi nt d 5 ft h gh jo nt oval to o b ula 

 occasionally omewhat po nted at the end 4-8 n 

 long, somet mes pubescent ar ed w th a den ely nter 

 woven CO er g of mo tl) deflexed sp ne areolfe 

 crowded, pp ly n apart w tl dark I on 

 wool and I J lion 1 stle p nes S n 

 old st.-m: olo 1 to 1 > no tl> le 

 than 1 ii I I 1 ell n j n broad t 

 obovHti-, I I 1 vered w tl nu ne o 

 spines an 1 I 1 L wer Cal f 



18. £ngelinaiinu Salm F g 154 An ere t to en 



prostrate profu ely branch ng coarse pla 



high, form g 1 | t 1 1 tl 1 



with a sho t I 1 



grayish bark I 



broadly obo 



variable n 



nearly as w d II 



1 in. apart tl j 111 



low, uneq al 1 tie p n 



small add t on 1 one e > 



colored, no tl jellow I I 



usually comp e el or g 1 1 1 



fls. yellow red n tl n fi 



fr. broadly pj r fo to 



da k 



P I I 



and Mex.-ri 

 the most 1 1 I 

 flat-stemn ed | 

 greatly in 1 ff 

 not as yet h 



19. phaeacintha 

 plant, 1-L t 1 1 



t tl e large 

 forms ha e 



1 A 1 £Fu e sem prostrate 

 1-- t 1 1 1 f ely oot ng from lower ar 



gin of .ioiiils; jciiiits broadly obovate, moderately thick, 

 4-6 in. long : areola! about 1 in. apart, with short wool 

 and reddish or brownish bristles; spines mostly tu\v;inl 

 margin or on apex of joints, 2-5, .straiiilit ;iiid still', 

 reddish brown to almost black with liglitir lips, 1-L".. 

 in. long: fls. 2% in. broad, yellow: fr. iis,i,ilh l,,,,!,-- 

 pyriform, 1 in. or less in diam. ami t\vir, n l,.nL'. |inr- 



nle, with greenish acid pulp. s. , >. aiul 



Mex. — This species and a numbrr ii -s U,-- 



o.ome deep purplish green duriiiLr .Muniii n.l .vini.r. 

 In the spring they lose their purplish I'.ih.r tcj a hirge 



fall 



■ spine 



winter than in : 



20. CamAnchica, Engelm. and Begel. A prostrate, 

 widely spreading plant l-'l'A ft. high, and freely rooting 

 at the lower margin of the joints: joints broadly oboviile 

 to orbicular, 4-6 in. long, moderately thick: arcc'.he about 

 1 in. apart, with light brown, short wool and yvllowish 

 brown bristles, mostly armed ; spines very "yarinbie, 

 usually 1-3, sometimes 3-6, on marginal areoin>, reddi.sll 

 to blackish brown with lighter tips, variable in length, 

 sometimes 2H in. long : fls. 2K-3 in. wide, yellow, with 

 reddish center: fr. oval to globose, sometimes pyri- 

 foriu, deep red, sweet, edible, 1-lX in. in diam. South- 

 west U. .S.-Var. gigant^a of the trade proves to be 

 O. phwacaiitliii. 



21. macrocentra, Engelm. A semi-prostrate, spreading 

 plant, 2-:f ft, hii,'li : joints strikingly purple-green, very 

 til 111, l.iMinlly olH.viitr to iii arlv . ni.ii'ular, 5-9 in. in diam., 

 with II lew n'liiiii-kalily li.iii.' s|iiiirs (in the marginal are- 

 "]"■■ :ii'"l:i; iili'iiii 1 ill. a|iiin, Willi grayish wool and 

 sliurt, Kia.vish yt'liow iu-istiis; s]iiues rarely wanting, 

 usually 1-2, reddish brown to almost black, annulaie 

 3-5 in. long, slender aud straight or variously twisteil. 

 sometimes 1-3 much smaller, lighter colored, secondary 

 spines: fls. 3 in. wide, yellow: fr. oval to globose, 

 rarely ovate, 1 in. in dinm., red ; pulp sweet, edible. 

 Southwest! ill r S M -Th's pec"es 's rema kal le 

 for t 111 1 rk sp nes and pn pie ]o n 



2' nig a s II \ 1 -e rob t pr ht pi t 



2 5 ft 

 t nged 

 moder 

 yellow 



gree br ties v/'. 

 on the ol 1 r 30 r 

 p e nt sually 



ly 



arelj 3 n 

 te son et me 

 tl top and 



w / 



1547. Opumia Engelmannii 



No. 18. 



1 i-2 in. in diam. : fr. clavate to narrowly obovate, 1^4 

 in. long and half as wide, greenish yellow, with few 

 .seeds. Texas to Ariz., extending into Mexico. 



24. Bafinfisquil, Engelm. (O. mesacmith<i,'Ra6rL.). A 

 wide-spreading, prostrate plant, freely rooting from the 

 lower margin of the joints, roots sometimes tuberous: 

 joints obovate to orbicular, usually 2-5 in. long and 2^ 



