110 BALSAMINACE^E. oxalis. 



IMPATIEXS. 



ting and elastic-ally recurved upon the raphe. Low acaulescent 

 herbs with "a sour watery juice : leaves alternate, mostly digitate- 

 trifoliate, rarely stipulate : peduncles umbellately or cymosely 

 1-many- flowered. Ours all perennials with trifoliolate leaves. 



* Acaulescent: leaves and scapes from the end of a slender peren- 

 nial scaly rootstock : flowers white or pinkish, somewhat yellow at 

 base and mostly red-veined : leaves palmately trifoliolate. 



0. Oregana. Nutt. T. & G. Fl. i, 211 . Villous with spreading rusty 

 hairs: leaves and scapes clustered at the end of the short lateral 

 scaly branchlets of long creeping rootstocks : petioles 2-6 inches high : leaf- 

 lets broadly obcordate 1-2 inches wide, smooth above : scapes not longer 

 than the petioles, 2-bracted above the middle, 1-flowered: sepals oblong, 

 rounded at the apex : petals oblong-obovate entire or emarginate, 8-12 

 lines long, white with purple veins : capsule globose, 2 or 3 lines in diam- 

 eter, its cells 1-2-seeded. In moist places and along streams in dense for- 

 ests, Paget Sound to California. 



0. trilliifolia Hook. Fl. i, 118. Glabrous or the underside of the leaf- 

 lets and inflorescence minutely pubescent : scapes and few leaves from the 

 end of a short, branching, fleshy-scaly rhizome : petioles 4-12 inches high : 

 leaflets broadly obcordate, %-2 inches broad: scapes longer than the pet- 

 ioles, terminating in a few-flowered umbel of white flowers on short pedi- 

 cels: sepals oblong-lanceolate, acute, 2 lines long : petals broadly oblan- 

 ceolate, deeply emarginate, 6 lines long: capsule linear, 6-8 lines long with 

 an acuminate beak half its length: carpels about 6-seecled. Along mount- 

 ain streams in dense forests : Paget Sound to California. 



* * Caulescent perennials, with trifoliolate leaves and yellow 

 flowers. 



0. Suksdorfii Trelease Mem. Bost. Nat. Hist. Soc. iv, 89. More or less 

 villous throughout : stems erect, slender, 4-12 inches high : leaflets deeply 

 obcordate with unequal lobes: peduncles scarcely longer than the petioles; 

 1-o-flowered : sepals oblong-lanceolate, acute, densely villous at the apex: 

 petals yellow, 0-8 lines long, thrice as long as the sepals, attached to each 

 other near the base : wavy-margined, not emarginate : styles shorter than 

 the inner stamens: capsule nearly smooth, about twice the length ofjhe 

 sepals. On dry wooded hillsides," Oregon and Washington. 



Order XX. BALSA MINACE^ Dumort. Anal. Fam. 46. 



Succulent herbaceous plants with bland colorless juice, sim- 

 ple opposite or alternate leaves without stipules and irregular 

 axillary flowers. Sepals 5, imbricate in the bud, deciduous, 

 the two upper usually connate, the lowest spurred ro gibbous. 

 Petals hypogynous, usually 4, and unitedby pairs, rarely 5 

 and distinct. Stamens 5, hypogynous ; with subulate filaments 

 and '2-relled anthers. Ovary 5-celled with the placentae in the 

 axis, ovules few to many in each cell, suspended. Stigmas 5. 

 sessile, distinct or more or loss united. Capsule 5 celled, the 

 dissepiments usually disappearing, 5 valved, with several ana- 

 tropous seeds in each cell. Seeds without albumen. Embryo 

 straight : cotyledons plano-convex! 



1 [MPATIENS L. Gen. n. 1008. 



Ours prlabrous annuals with alternate leaves and transparent 

 stems. Sepals apparently only 1 from the union of the two up- 



