438 BUpnoRBiACH.«. (spurge family.) 



carunculate. — Stellate-downy, or scurfy, or liairy and glnndular plants, mostly 

 strong-scented ; tlic sterile flowers above ; the iertilc usually at the base of the 

 same spike or cluster. Leaves alternate, or sometimes iiniicrfectly opposite, 

 with or without obvious stipules. (Kporwc, the Greek name of the Castor-oil 

 riant, of this family.) 



§ 1. GEISELERIA, Klotzseh. Sterile flowers mostly with a 4-parted calyx, 

 as many orate.-loimulate petals, a A-raijed disk, and 8 stamens: Ji-rl He floweis 

 with a 5-parted culi/x, and very minute awl-shaped rudiments of petals ; the 

 3 styles 2-clefl. 



1. C. glanduldSUS, L. Annual, rough-hairy and glandular (1° - 2° high), 

 somewhat iimijcUately branched ; leaves oblong or lincar-oi)long, obtusely toothed, 

 the base with a saucer-shaped gland on each side; fertile flowers capitate-clus- 

 tered at the base of the sterile spike, sessile in the i'orks and terminal. — Open 

 waste places, Virginia, Illinois, and southward. July - Sept. 



§ 2. PILINOPHYTUM, Klotzseh. Sterile flowers with the calyx 'qnally 5- 

 parted, as many (/lands ulternaie with the petals, and 10-14 stamens: flrtile 

 flowers with a 7-l2-jiarted calyx and vjithout petals; the 3 styles twice or 

 thrice 2-parted. 



2. C. capitatus, Michx. Annual, densely soft-woolly and somewhat 

 glandular (l°-2° high), branched; leaves long-pctioled, lanec-oblong or elon- 

 gated-oblong, rounded at the base, entire ; petals obovate-lanceolate, densely 

 fimbriate; fertile flowers several, capitate-crowded at the base of the short ter- 

 minal sterile spike. — Barrens of Illinois, Kentucky, and southward. Tine 

 barrens of New Jersey, Knieskern ! July - Sept. 



§3. GYNAMBLOSIS, Torr. (Engelmannia, A7o^rsc/(.) Sterile flowers with 

 an unequally 3 - 5-parted calyx, and us many petals and scale-like glands ; the 

 stamens varying from 3-11: flirtile flowers with an equally 5-parted calyx, 

 and with no petals, 5 glands, and a 2-3-celled ovary, crowned with as many 

 sessile 2-parted stnjmas. 



3. C. monanthogynus, Michx. Annual, whitish-stellate-pubcsccnt and 

 rusty-glandular; stems (l°-2° high), slender, erect, below often umbellately 

 3-4-forkcd, then repeatedly 2-3-forked or alternately branched ; leaves oblong- 

 ovate or narrowly oblong, entire, often acutish (6"- 12" long, about twice 

 the length of their petioles) ; flowers in the forks, the sterile few on the sum- 

 mit of a short and erect peduncle, the fertile few and clustered or mostly soli- 

 tary on short recurved peduncles; stamens 3-8; ovary 2-celled ; fruit often 

 by abortion 1-celled and 1-seeded ; the seed broadly oval. (C. elh'pticum, Nutt. 

 Engelinannia Nuttalliana, /l/otec/j. Gynamblosis monanthogyna. Ton-.) — 

 Barrens, and dry prairies, from Illinois and Kentucky southward and west- 

 ward. June - Sept. 



(C. EUTRfGYNUs, as It mnv be named, is the related Texan species, — with 

 more silvery down, rounder leaves on longer petioles, 7-12 stamens, more pe- 

 duncled fertile flowers, and a 3-celled ovary generally ripening 3 oblong-oval 

 seeds, — mentioned by Torrey as a possible variety of this, and taken by 

 Baillon and Miiller for C. ellipticus of Nuttall.) 



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