EUPHORBIACE.fi. (SPURGE FAMILY.) 391 



5. STILLilVGIA, Garden. Stillingia. 



Flowers monoecious, aggregated in a terminal spike, apetalons. Ster. Fl. 

 Calyx a 2-cleft or crcnulate little cup. Stamens 2 : filaments elongated, united 

 at the base : anthers adnate, turned outwards. Fert. FL Calyx 3-toothed or 

 cleft. Style thick : stigmas 3, diverging, simple. Pod 3-celled, 3-lobed, 3-seed- 

 e( j. — Smooth upright plants, with the alternate leaves mostly 2-glandular at 

 the base ; the fertile flowers few at the base of the dense sterile spike (rarely 

 separate) ; the bract for each cluster with a gland on each side. (Named for 

 Dr. B. Stillinyfleet.) 



1. S. sylvsitica, L. Herbaceous (2°-3°high); leaves almost sessile, 

 oblong-lanceolate, serrulate ; glands of the spike saucer-shaped. — Sandy and 

 dry soil, Virginia and southward. June. 



6. C ROTO IV, L. Crotox. 



Flowers monoecious, spiked or glomerate. Ster. Fl. Calyx 5-parted, rarely 

 4-parted, valvate in the bud. Petals as many as the divisions of the calyx, 

 mostly small, hypogynous. Stamens 5 - 20, distinct : anthers turned inwards. 

 Glands or lobes of the central disk as many as the calyx-lobes and opposite 

 them. Fert. FL Calyx 5- (rarely 8-) cleft or parted. Petals often none or 

 minute. Glands or disk as in the sterile, or none. Ovary 3-celled, rarely 2- 

 celled, with as many styles, which arc from once to thrice 2-cleft. Pod 3- (rarely 

 2-) celled and lobed, separating into as many 2-valved 1-sceded carpels. — Stel- 

 late-downy, or scurfy, or hairy and glandular plants, mostly strong-scented ; 

 the sterile flowers above ; the fertile below, usually at the base of the same spiko 

 or cluster. Leaves alternate, or sometimes imperfectly opposite. (Kporcoy, the 

 Greek name of the Castor-oil Plant, of this family.) — The following have been 

 made into as many genera by Klotzsch, apparently without sufficient reason. 



4 1. PILINOPHYTUM, Klotzsch. — Sterile flowers uith the calyx 5-parted, 5 

 glands alternate with the petals, and 10-12 stamens on the hairy receptacle : fertile 

 flowei's with an unequally 8-cleft calyx and no petals ; the 3 styles twice or thrice 

 2-cleft. 



1. C. capifiitlllll, Michx. Soft-woolly and somewhat glandular (1°- 

 2° high), branched ; leaves very long-petioled, lance-oblong or elongated-oblong, 

 rounded at the base, entire ; fertile flowers several, capitate-crowded at the base 

 of the short terminal sterile spike. (]j — Barrens of Illinois, Kentucky, and 

 southward. Pine barrens of New Jersey, Knieskern ! July - Sept. 



$ 2. GE1SELERIA, Klotzsch. — Sterile flowers with a 4-parted calyx, 4 ovate- 

 lanceolate petals, a 4-rayed disk, and 8 stamens : fertile flowers with a 5-parted 

 calyx, and very minute awl-shaped rudiments of petals ; the 3 styles 2-clcft. 



2. C glailduldsum, L. Rough-hairy and glandular (l°-2° high), 

 somewbat umbellately branched ; leaves oblong or linear-oblong, obtusely 

 toothed, the base with a saucer-shaped gland on each side ; fertile flowers capi 

 tate-clustered at the base of the sterile spike, sessile in the forks and terminal. 

 (J) — Open waste places, Virginia, Illinois, and southward. July- Sept. 



