EUPHORBIACE^E. 647 



fimbriate; flowers in dense lateral clusters; involucre cleft on the back; 

 appendages of the gland red or white, truncate or crenate; capsule acutely 

 3-angled ; seeds ovate, obtusely angled, minutely roughened. Rich soil, 

 Nashville, Tennessee (Dr. Gattiager), and westward. 



E. dentata, Michx. Annual, erect (1 high), irregularly branching ; 

 leaves distant, petioled, ovate, lanceolate, or linear, coarsely toothed, the 

 lower ones alternate, the uppermost ones opposite ; involucres nearly sessile, 

 with five toothed lobes, and mostly a single stalked gland ; seeds nearly glob- 

 ular, slightly tubercled. Rich soil, Tennessee, and northward. July- 

 September. 



E. deltoidea, Engelm. (ined.). Small, perennial; stems (2' -4' long); 

 diffuse, glabrous; leaves (1^" long or less) petioled, obliquely deltoid, cor- 

 date, or reniform, sprinkled with short hairs, the margins narrowly revolute ; 

 stipules minute, entire; involucre single, terminal (always?) turbinate, ped- 

 icelled, with downy lobes, and transversely oblong glands without append- 

 ages ; styles very short ; capsule (immature) acutely 3-augled, glabrous. 

 South Florida (Curtiss). 



E. prostrata, Ait. Prostrate, more or less pubescent (4'-6' long) ; leaves 

 oval, slightly serrulate, smooth above (2" -3" long) ; flowers in lateral clus- 

 ters ; involucre top-shaped ; appendages narrow ; capsule long-ciliate on the 

 angles ; seeds 4-angled, strongly rugose. Waste places, Florida, and west- 

 ward. 



E. adenoptera, Bertolini. Prostrate ; stems shortly villous ; leaves 

 obliquely oblong, denticulate ; stipules subulate, ciliate ; involucre top- 

 shaped, hirsute, deeply cleft without, the ciliate lobes lanceolate ; append- 

 ages rosy ; capsule hirsute, acute-angled , seeds oblong, 4-angled, trans- 

 versely furrowed. South Florida (Curtiss) 



ACALYPHA, L. 



A. Lindheimeri, Muller. Stem (1 high) branching, hirsute; leave* 

 rhombic-ovate, serrate, short-petioled (!' long) ; spikes very slender; bracts- 

 of the numerous pistillate flowers ovate, deeply 5-7-toothed, 1-2-flowered ; 

 ovary hirsute ; styles long, setaceously 4-6-cleft ; seeds minutely pitted. 



Key West (Riddell in Herb. Mohr). 



MERCURIALIS, Tourn. 



Flowers dioecious, apetalous, in axillary spikes or clusters. Calyx 3-parted. 

 Stamens 8-20, distinct. Styles 2, simple, united at base. Capsule 2-celled. 

 2-seeded. 



M. annua, L. Smooth, branching (1 high); leaves ovate-lanceolate, 

 crenate-toothed ; sterile spike longer than the leaves ; fertile flowers clus- 

 tered ; capsule hispid. Waste places, sparingly naturalized. 



