Polyrjula. POLYGALACK.E. 451 



Var. angUStifolia, Torr. & Gray. Leaves vcrv narrow, liiieir, arutisli, glaiiroux 

 or uearly so : tlowirs siii:ilkr : cajjsule slightly uarnjwer and mostly e(|nalling the wingH. — 

 Fl. i. 071 ; P. jiabtllata, Siiutll. distr. jil. Kugel, no. 37; Gray, 1. c. ; Chodat, 1. c. 53, t. 15, 

 f. 25, immature seed (the ripe ones not differing essentially fn»mtiiose of thetv|»e). — Centr. 

 and S. Florida, /.itivenwortli, liinji/. Counter, I'almtr, GarUr, \ash (plants of the last tiiree 

 in floral char, approaciiing the type). 



§ 3. CiiAMitBuxus, DC. Herbs or uiulershrubs, sometimes spiny : leaves 



alternate : calyx mostly deciduous : keel beaked or crested : disk more or b-ss 



developed. — Prodr. i. 331, as modilied by Chodat, 1. c. 93. 



♦ Keel beaked with a eucunatc or cornuto jirocess : flowers (hctmomorpiinus or hcteronior- 

 ])hous), mostly in leafless racemes: Western and Southwestern. 

 •J— Unarmed. 

 ++ Soft canescent-tomentulose : leaves obtuse or obtusish : flowers rather large in slujrt 

 racc-mes : species of the Southwest. 



P. Rusbyi, Greene. Low undershrub : stems (3 to 5 inches long) from a much branched 

 ligneous rootstock : leaves elliptic or olilancc<date, cuneate at tiie base, 5 to 8 lines long, 

 uearly half as broad : flowers nearly half inch in lengtli, slender-pedicelled : wings carneous, 

 elliptical, 4 or 5 lines long, half as l)road, somewhat surpassed by the ro.se-purple petals : 

 keel witii oblong bluntish beak. — Hull. Torr. Club, x. 125; Wheelock, I.e. 145; Chodat, 

 1. c. 104, t. 18, f. 1-3. — Arizona, Paluier, Rusby, Jones, Lemmon ; first coll. by Palmer ; fl. 

 early summer. 



++ ++ Pubescent or ])ubcrulent : leaves of firm texture, at least the upper acute or miuro- 

 nate : flowers smaller, developing successively upon and soon deciduous from a slender 

 bracteolate and mostly geniculate axis: upper sepal often persisting under the young 

 puberulent capsule : southwestern very closely related species with numerous stems from 

 a woody root or branched lignescent stock. 



= Upper leaves lanceolate. 



P. Lindhelmeri, Gray. Pubescent or even tomentose-pubescent with spreading hairs : 

 leaves reticulated, mucronate, not glaucescent ; the lower oval, 6 to 9 lines long, a third to 

 more than half as l)road ; racemes (inch or more in length) few-flowered ; rhacliis with 4 to 

 6 soon strongly geniculate joints : flowers purjde, 2 to 2A lines long : outer sepals pubescent 

 and ciliated, narrow and acutish : wings cuneate at the base : capsule elliptic-oblong, covered 

 with spreading pubescence. — PI. Lindh. pt. 2, 150, PI. Wright, i. 31), & ii. 30; Wheelock, 

 1. c. 142, at least in great part, but exd. var.; Chodat, 1. c. 107, t. 18, f. 10-12. — Rocky 

 ground, Texas and New Mexico; the earliest collectors, Lindheimer, Wriyht. 



P. Texensis, Rohinson, n. .sp. Habit and foliage of the last preceding species : covered 

 throngiiout with a very fine incurved or appressed puberulence : up])er leaves more narrowly 

 lanceolate: racemes much longer; rhachises with 12 to 18 joints: outer sepals shorter, 

 elliptic-oblong, obtuse, finely incurved-puberulent upon the outer surface : wings scarcely 

 narrowed at the base : appendage of the keel rather narrowly olilong : fruit unknown. — 

 Rocky places, Texas, on the Ujipcr CJuadalupe River, Lindheinur, no. 337, .Inly, 1845. 

 Evidently growing with or near the type of the last ; also near Comanche, lieveiclion, no. 708. 



P. Arizonae, Chodat. Similar in babit to the last two preceding species : glauce.scent and 

 covered (under lens) with very short incurved or appressed hairs, leaves lanceolate to lance- 

 linear, carinate, not strongly reticulated : inflorescences rather short ; rhachises 4-8 jointe<l : 

 outer sepals ovate-oblong, relatively short and broad, olitu.se, minutely puberulent : ap]>en- 

 dage of the keel very short and blunt : puberulent capsule shorter and broader than in 

 P. Lindhelmeri. — Monogr. Polyg. 108, t. 18, f. 13-15. P. Liudheimeri, var. jxirrifolia, 

 Wheelock, 1. c. 143. — Arizona, on limestone ledges in foot-hills of the Santa Rita Moun- 

 tains, Prinrfle, 1884 ; also secured (ace. to Chodat) on the Mex. Bound. Surv. no. 190, and in 

 New Mexico by Wright, no. 946. 



= = L'ppor leaves linear. 



P. T'Weedyi, Rritton. Glaucous and (uniler lens) incurved-puberulent : all leaves except 

 tiie lowest oblong-linear to linear, acute, pale, erect, 4 to 10 lines long, a Hue or less in 



