368 GERANIACE^. Oxalis. 



callosities: scapes and petioles more or less villous. — Oxal. 20. — Florida, Meehan, Fred- 

 holm, and in greenhouses elsewhere. (Adv. from S. Am.) 



++ ++ Leaflets 3 to 5, medium-sized, rather succulent, obcordate-deltoid to V- or Y-shaped, 

 nearly or quite without apical callosity. 



= Leaflets 3, obcordate-deltoid to mostly V-shaped. 



O. Drummondii, Gray. Glabrous: petioles about a span high; leaflets 3 to 10 lines 

 long and decidedly broader, deeply V-shaped, usually with narrow spreading lobes : scape 

 nearly twice as long as the leaves, umbellately few-flowered : flowers 7 to 10 lines long, their 

 slender pedicels at length an inch long : sepals and bracts acutish, the former frequently 

 with 4 to 6 more or le.ss confluent apical callosities : capsule somewhat pubescent, 5 lines 

 long; seeds pale brown, round-ovoid, flattened longitudinally, 8-10-creased and trans- 

 versely wrinkled, half line long. — PI. Wright, ii. 25; Torr. Bot. Mex. Bound. 41. 0. 

 vespertilionis, Torr. & Gray, Fl. i. 679 ; Trelease, Mem. Boston Soc. Nat. Hist. iv. 91, t. 11, 

 f. 13. — Arizona, Palmer, and S. W. Texas. 



= = Leaflets 3 to 5, deeply obcordate. 



O. divergens, Benth. Glabrous : petioles an inch to a span long ; leaflets mostly 4, 5 to 10 

 lines long and about as broad, obcordately parted to the middle, the lobes narrow and ascend- 

 ing : scapes 1 to 3 times as long as the leaves, umbellately 3-10-flowered : flowers 5 to 7 lines 

 long, nearly equalling their slender pedicels : sepals rather acute, with 2 callosities. — PI. 

 Hartw. 9; ? Lindl. Bot. Eeg. t. 1620 (white-flowered) ; Trelease, 1. c. 91, t. II, f. 11. 0. 

 vespertilionis. Gray, PL Fendl. 27. 0. violacea, Gray, PI. Wright, i. 27, ii. 25. — S. Arizona 

 to W. Texas. (Mex.) 



Var. amplif olia, Trelease, n. comb. Nearly glabrous : leaflets 3, an inch long, and 

 twice as broad, rather thin, somewhat ciliate, very openly obcordate-deltoid with divergent 

 lobes : flowers about 7 lines long, shorter than the pedicels : sepals broadly oblong, very 

 obtuse, with 4 oblong callosities : petals obovate, entire, about 4 times as long as the calyx : 

 capsule 4 to 5 lines long, about twice the length of the sepals ; seeds ovate, acute above, 

 transversely rugose, with about 4 longitudinal grooves on each side, half line long. — 0. 

 latifolia, Trelease, 1. c. 91, t. 11, f. 12, not HBK. — Santa Rita Mountains, Arizona, Pringle, 

 and Organ Mountains, New Mexico, V<isey, to S. W . Texas, Havard , sind Magdalena Island, 

 Lower California, Brandegee. Intermediate between O. divergens and 0. Drummondii. 



++++++ Leaflets 3 to 10, long but relatively narrow, rather succulent, obcordate-cuneate 

 to mostly Y-sIiaped, without apical callosity. 



O. decaph^Ua, HBK. Glabrous : petioles a span long or less : leaflets f inch to 2 inches 

 long, notched or parted halfway to tlie base, occasionally a little ciliate : scapes slightly 

 longer than to twice as long as the leaves, umbellately several-flowered : flowers 5 to 10 lines 

 long, scarcely shorter than the slender pedicels : sepals obtuse, with 2 apical callosities : 

 capsule about 4 lines long, its cells about 4-seeded ; seeds pale brown, compressed, round- 

 ovoid, longitudinally 8-10-creased and transversely wrinkled, half line long. — Nov. Gen. 

 & Spec. v. 238, t. 468; Trelease, 1. c. 91, t. 11, f. 14. — Mountains of Arizona and New 

 Mexico. (Mex.) 



0. CERNUA, Thunberg, a bulbiferous species with large yellow flowers, has been collected in 

 Duval County, Florida, Fredholm, as escaped but not hardy. (Cape.) 



7. IMPATIENS, Rivin. Balsam, Jewel-weed. (Named from the 

 elastic dehiscence of the fruit when touched.) — Annual mild herbs with succulent 

 translucent stems and simple thin alternate petioled exstipulate leaves. Some 

 small regular cleistogamous flowers normally produced in addition to the irregular 

 ones. — Tetrap. t. 121 ; L. Gen. no. 680; Torr. & Gray, Fl. i. 208; Gray, Gen. 

 111. ii. 133, t. 152, 153; Benth. & Hook. Gen. i. 277; Baill. Hist. PI. v. 39; 

 Trelease, Mem. Boston Soc. Nat. Hist. iv. 99 ; Warburg & Reiche in Engl. «fe 

 Prantl, Nat. Pflanzenf. iii. Ab. 5, 389. — A rather large genus, mostly of Asia 

 and Africa. 



