()0 AVILLIAM TEELEASE CK 'J HE 



7. O. ACKTOSELLA, L. Spec, 433. O. Americana, Bigel. O. Montana, Raf., Annals of 

 Nalm-e, i, 12. Acaiilescent, pereiuiial by a slender sini])le or sparingly branched root- 

 stock, more or less rusty-pubescent ; leaves few (usually 3-G) a span or less high ; pet- 

 ioles slender, articulated Avith their dilated bases, that jici-sist on the rootstock clustered 

 at the end of each years groAvth; leaflets 3, broadly obcordate, with a minute append- 

 age in the narrowed base of the sinus; scapes solitary or few, slightly exceeding the 

 leaves, 1-flowered, 2-bracted about an inch below the flower; bracts broad and rather 

 obtuse; flowers open cui^-shaped, 10-15 mm. long, homogone (but usually appearing as 

 if the long-stjded form t>f a trimorphic species); sepals ovatc-oblong, rather obtuse; 

 petals 3-4 times as long as the calyx, eniarginate; capsule sul)globose, 2-3 mm. long, its 

 cells 1-2-seeded, glabrous; seeds ovoid, acute above, with about 5 shallow longitudinal 

 grooves on each side, and obscurely pitted. — Damp woods from the mountains of Xorth 

 Carolina far northward, where it ranges from the Atlantic to the Saskatchewan. Also 

 found in Europe, Asia and Xorth Africa. Recurved scapes bear cleistogene flowers, 

 mostly concealed among the moss, etc., at the base of the plant. — PI. 11, fig. 7. A form 

 with deeper-colored flowers found in Xew Brunswick, etc., is var. suhpurjmrascens, 

 DC. Prod. I, 700. 



Var. Oregana. O. Oregana, Xutt. in Torrey and Gra}^, Fl. X. Am., i, 211. 0. 

 acetosella, Hook., Fl. Bor.- Amer. i, 118. Larger in every way and more rusty-pubescent, 

 as much as a foot high and with leaflets in extreme cases over 40 mm. long ; floAvers 20- 

 23 mm. long ; capsules 10 mm. ; seeds 2.5 x 3.5 mm. ; otherwise as in the type. — Califor- 

 nia to Washington Territory. The description of fruit and, in part, of inflorescence, in 

 Botany of California, i, 96, relates to the next species.— PI. 11, fig. 8. 



8. O. TiiiLLiiFOLiA, Hook., Fl. Bor.-Amer., i, 118. O. macro-pliylla, Dougl. in Hook. I. c. 

 O. Oregana, Brewer and AVatson, Bot. Calif, i, 96, in part; Cray, Proc. Amer. Acad, 

 viir, 378. Habit of the last, sparingly pubescent or glabrate ; leaves a span to a foot 

 high, leaflets 25-45 mm. long and usually about as broad; scapes mostly several, a little 

 longer than the leaves, iimbellately about 6-flowered; pedicels at length equalling the 

 capsules; bracts acute; flowers small, 5-12 mm. long, homogone; petals deeply eniar- 

 ginate or bifid and nearly white; capsule linear, 25 mm. long, its cells about 6-seeded, 

 glabrous; seeds red-brown, oblong, obscurely coarse-pitted and somewhat longitiidinally 

 striate, 1 X 2.2 mm. — Damp woods, Washington to Oregon. — PI. 11, fig. 9. 



9. O. vioLACEA, L. Spec. 434. 0. longiflora, L. O. j^idchella, Salisb. Acaulescent, 

 perennial from a stout brown bulb with rusty-ciliate scales, glabrous or the pedicels and 

 bases of the leaves glabrate ; leaves several from each bullj, a sjjan or less high, leaflets 

 3, about 10 mm. long, broadly obcordate with an open sinus, the midrib tipi^ed on the 

 lower side with a pair of usually prominent confluent orange callosities'; scapes several, 

 mostly about twice as long as the leaves, umbellately 3-12-flowered; pedicels at length 

 rather longer than the flowers ; bracts acute ; flowers 15-20 mm. long, heterogone; sepals 

 ovate, obtuse, with two more or less confluent orange callosities on the outer side at the tip ; 

 petals thrice as long as the calyx, undulately obtuse or truncate, rose-purple or sometimes 

 white ; capsule round-ovoid, about 5 mm. long, its cells about 3-seeded, glabrous ; seeds 



' These callosities, or so-calleil glands, are comniou to the same nature occurs around the lower surface of the 



many species of this section of Oxalis. In 0. Miirtiana, hi- leaflets. 



ptirCtta,etc., an intraniarginal series of small callo.sities of 



