470 



EUPHORBIACEAE. 



Vol. II. 



3. Tithymalopsis arundelana 



(Bartlett) Small. Anne Arun- 

 del Spurge. Fig. 2751. 



Euphorbia arundelana Bartlett, Rhodora 



13: 364. 1911. 



Perennial, with perpendicular stout 

 rootstocks, glabrous or pubescent, bright 

 green. Stems tufted as in T. Ipeca- 

 cuanhae, stout, 8' tall or less, dichoto- 

 mous or trichotomous above ; leaves 

 scale-like on the lower part of the 

 stems, the upper ones mostly i' long or 

 less, ovate, oval or oblong, obtuse ; in- 

 volucres hemispheric, about i" high, 

 those on the lower part of the stem 

 very long-peduncled, the upper ones 

 shorter-peduncled; appendages white or 

 pink, suborbicular. 



In sandy places, Anne Arundel County, 

 Maryland. May-June. 



2. Tithymalopsis marylandica 



(Greene) Small. Maryland 

 Spurge. Fig. 2750. 



Euphorbia marylandica Greene, Pittonia 3 : 

 345. 1898. 



Perennial, with horizontal rootstocks, gla- 

 brous, pale green, glaucescent. Stems tri- 

 chotomous near the base, thence bushy, 16' 

 tall or less, the branches dichotomous; 

 leaves linear to linear-lanceolate, I'-ii' 

 long, acute, opposite above the whorl of 3 

 at the first fork ; involucres hemispheric, 

 nearly i" high, rather short-peduncled; ap- 

 pendages white, suborbicular to reniform. 



On sand hills, Anne Arundel County, Mary- 

 land. Summer. 



4. Tith3nnalopsis Ipecacuanhae (L.) 



Small. Wild Ipecac. Ipecac Spurge. 



Fig. 2752. 



Euphorbia Ipecacuanhae L. Sp. PI. 455. 1753- 

 Tithymalopsis Ipecacuanhae Small, Fl. SE. U. S. 716. 



1903 



Perennial by a deep perpendicular root, gla- 

 brous or pubescent. Stems several or many, 

 slender, spreading, ascending or nearly erect, 

 4'-io' long, branched ; leaves green or red, won- 

 derfully variable in outline from linear to orbic- 

 ular, 5 '-3' long, mostly opposite, entire, the upper 

 sometimes whorled, the lower often alternate, 

 short-petioled; involucres axillary, mostly hemi- 

 spheric, nearly i" long, slender-peduncled ; bear- 

 ing 5 transversely elliptic or oblong green sessile 

 unappendaged glands; capsule li" in diameter, 

 nodding; seeds light gray, oblong-ovoid or ovoid, 

 li" long, pitted, obscurely 4-sided. 



In dry sandy soil, Connecticut to Florida, mostly 

 near the coast. Also in southern Indiana. An 

 emetic. Spurge-ipecac. American white ipecac. May- 

 Oct. 



