oxalidace^e. 323 



unifloris folio cequilongis medio tribracteolatis ; bracteolis angustissime 

 linearibus; flore minimo; petal is integris Uriels; ovarii loculis uni~ 

 ovulatis; seminibus rugosis. 



Hab. Near Banos, and Culnai, on the high Andes of Peru. 



A very small or minute plant, half an inch to an inch high, branch- 

 ing, from a slender and apparently annual root, into a number of very 

 short stems or rootstocks, which are scaly with persistent stipules, 

 minutely and sparsely hairy under a lens, especially the leaves. Sti- 

 pules consjncuous and large for the size of the plant, 4 or 5 lines long, 

 scarious, very thin, adnate to the lower half of the petiole, their free 

 apex fimbriately cleft into setaceous or linear lobes. The free portion 

 of the petiole filiform, scarcely margined or dilated. Leaflets 3, obcor- 

 date, from one to 2 \ lines long, thickish, areolate-punctate, nearly 

 sessile. Peduncles one-flowered, filiform, about the length of the leaves, 

 bibracteolate near the middle with a pair of scarious, narrowly linear 

 bracilets, which are entire, or nearly so. Flower minute, at most li 

 lines in length. Sepals oblong, obtuse, glabrous. Petals obovate, 

 entire, or barely retuse, "yellow" scarcely exceeding the sepals, appa- 

 rently more or less united above the base. Filaments glabrous. 

 Styles short, glabrous. Stigmas capitate. Cells of the ovary apparently 

 one-ovided. Seed solitary in each cell of the globular-ovoid membra- 

 naceous capsule, ovoid ; the integument transversely rugose. 



This is doubtless related to the Bolivian Oxalis parvula of Remy 

 (perhaps 0. nubigena of Walpers) ; which is more strictly acaulescent, 

 glabrous, with white and obcordate petals, and the cells of the ovary 

 many-ovuled. 



11. Oxalis Pickeringii, Sp. Nov. 



0. caulescens e radice fasiformi lignescente, viscoso-pxibescens ; stipulis 

 nidlis; foliis trifoliolatis ; foliolis parvis obovato-cuneatis emarginatis 

 glabratis petiolulatis ; peduncidis folium superantibus apice bifidis 

 cymoso-plurifloris ; pedicellis bracteolis lanceolatis brevioribus ; sepalis 

 ovato-acuminatis capsula oligosperma longioribus ; filamentis stylisque 

 viscoso-barbatis. 



