MACLOSKIE : EUPHORBIACE/E. 553 



Patagon., Chubut, by Lago Musters; by Rio Sta. Cruz and Rio Chico. 



2. EUPHORBIA Linn. 



Herbs or shrubs, with acrid, milky juice, and monoecious, pedicled 

 Hoivers, in sets of several males and a single, exserted female, enclosed 

 together in a calyciform involucre. Perianth none, or 3 rudiments on the 

 female flower; stamens each on a jointed filament-pedicel, and each repre- 

 senting a flower. Ovary sessile on top of its pedicel, 3-celled, the cells 

 i -seeded ; becoming a tricoccous/>7/. 



Species 600, chiefly subtropical, and often xerophil. Some are found 

 in Lapland and Iceland ; whence they extend to S. Amer., Australia, and 

 the Fijis, and New Zealand. 



i. E. PATAGONICA Hieron. 



Glabrous, glaucous, having many stems from a short root. Leaves 

 fleshy, subentire ; the lower cauline sparse, sessile, semiamplexicaul, 

 oblong, entire, 25 mm. by 7-8 mm. Upper floral leaves ovate, basi-cor- 

 date. Inflorescence frequently dichotomous from 3 approximate radii. 

 Involucre long-peduncled (8-10 mm. long) dentate, subtruncate, with 4-5 

 glands. Capsule deeply 3-sulcate, scarcely calyculate. Styles briefly 

 united at their base, thick and 2-lobed above. 



N. Patagon.; common in dunes near Carmen de -Patagones. 



2. E. PORTULACOIDES (Linn.) Spreng. 



Glabrous (or minutely velvety), with many stems from a long root, rays 

 of the umbel 3, often long and leafy, and repeatedly dichotomous ; the 

 leaves glaucous, fleshy, sessile from an attenuate base, obovate, obsoletely 

 crenulate, the floral leaves similar. Inflorescences in the dichotomies ; 

 involucral lobes long with purple glands. Seeds ovate, subtetragonal, 

 smooth. 



(Chili); Patagon., at Coy Inlet, by Hatcher, Nov. 5, 1896; "in 

 bunches on the pampas." Chubut ; in dry, sandy places. Allied to E. 

 ipecacuanha L. 



E. PORTULACOIDES CHILENSIS Gay. 



Stems often erect. 9 Leaves oblong-lanceolate or lanceolate, acute. 

 (Chilian Andes ; Argentina) ; N. Patagon., by Rio Negro. 



