OxAU3. OXALIDACE/E. 211 



1. O. Acetosella (Linn.) : rhizoma creeping, scaly ; leaflets obcordate, 

 puberulent; scapes at length longer than the leaves, l-Howercd, 2-bracleo- 

 late above the luiddle ; petals obloncr-obovate (white Avith red veins, yellow- 

 isli at tlie base), often slightly eniarginate ; styles and longer stanjens of 

 equal lentrth, longer than the sepals. — Eng. bot. t. 7G2 ; Michx. ! Jl. 2. p. 38 j 

 DC. prodr. 1. p. 700; Houk.Ji. Bor.-Am. I. p. 118 (partly). O. Americana, 

 Bigel. ill DC. I. c. 



In AvooJs, from lat 4P ! to the northern part of Canada. June. — 11 Rhi- 

 zoma clothed with the imbricated and fleshy persistent bases of the leaves. 

 Peduncles 2-2 inches long; the portion above the bracts pubescent. Flower 

 large. Stigmas 2-lobed. Cells of the capsule about 2-seeded. — Woud-Sorrel. 



7^ 2. O. Oregana (Nutt. ! mss.) : " rhizoma creeping, thick and scaly ; leaf- 

 lets (large) very broadly obcordate, ciliate ; scapes l-flowered, sliorler than 

 the leaves, 2-bracteolate above the middle; petals ob!ong-obovate, emargi- 

 nate (white witii purple veins, yellow at the base) ; stamens and styles all 

 shorter than, or scarcely exceeding, the sepals." — O. Acetosefla, Hook. I. c. 

 partly. 



Shady woods of the Oregon in moist places, Nutt all ! Dr. Scolder ! — If 

 Flowers, and especially the leaves, larjier than in O. Acetosella: leaflets 

 about an inch long and an inch and a half wide. Scapes always manifestly 

 shorter than the leaves. 



3. O. trill iifotia (liook.) : acaulcscent ; peduncles umbelliferous, equalling 

 the petioles; leaflets obcordate, glabrous; styles the length of the longer sta- 

 mens. Hook. fl. Bor.-Am. l.p. 118. — O. macrophvUa, Do/igl. mss. v\ Hook. 



" N. W. Coast, near the Grand Rapids of the Oregon, and in valleys of the 

 Rocky Mountains,-' Dous'las; also Nuttatl ! — 11 " Petioles 6-12 inches 

 high. Leaves very large, and when the plant is out of flower might be mis- 

 taken for those of Trillium grandiflorum." Doii.gl. in Hook. I. c. — " Root 

 creeping. Leaflets about 2 inches broad. Pedicels shorter than the pods. 

 Flowers about the size of those of O. Acetosella, Avhite." NiUt. 



O. violacea (Linn.) : bulb scaly; leaflets obcordate with a very shallow 

 sinus, broader than long, nearly glabrous ; scapes longer than the leaves, 

 3-9-flowered ; pedicels umbellate; with minute bracts at the base; sepals 

 Avith a thickened orange-colored tip ; petals obovate (violet) ; filaments hairy, 

 at length equalling or longer than the styles. — Jacq. O.val. p. 35. t. SO. fis;. 2. 

 fide yVil/d. sp. 2. p. 7Sti ; Michx. I. c. ; Ell. sk. 2. p. 525 ; DC. I. c. p. 605. 

 In rocky wood% &c.. Canada ( Linn.) and New-England States I to Georgia, 

 west to Arkansas, Dr. Pitcher! and Texas, Drumniond ! April-May, 

 and sometimes again in Augu>t. — Bulb clothed with membranaceous scales. 

 Scapes 6-9 inches high, generally slightly bifid at the summit. Leaves with 

 transparent dots. Flowers large. Capsule oblong, few-seeded. Styles 

 hairy, at first longer than the stamens : stigmas 2-lobed. 



5. O. cornicnlata {lAnn.): [root perennial ;] stems decumbent, branched, 

 radicaline, leafy ; stipules united to the base of the petiole; leaflets obcor- 

 date. pubescent ; peduncles 2-5- but mostly 2-flowered ; sepals pubescent ; 

 petal; (yellow) emarginate; styles as long as the longer stamens; capsule 

 many-seeded, densely pubescent. Am. — DC. prodr. 1. p. 692; Michx. fl. 

 2. p. '39; Hook. fl. Bor.-Am. l.p. 117. O. pusilla, Salisb. in Linn, trans'. 2. 

 p. 242, t. 23. O. furcata. Ell. .sk. l.p. 527 1 O. Lyoni, Pursh,fl. l.p. 322 ? 



In cultivat?d grounds, Canada to Carolina, Michaux ^ Pursh. Louisi- 

 ana! we;t to California, Hook. <Sr Am. — The only specimens we have seen 

 with manifest stipules are from New Orleans. Not being able to satisfy our- 

 selves of the real distinctions, if there be anv, between this and the succeed- 

 ing species, we copy the characters of authors, and refer all the perennial 

 forms to 0. corniculata, and the annual ones to O. stricta. Two unpublished 



1^4 



