146 DROSERACE/E. Dhosera. 



2-5 rows on each placenta. — Small herbs, growing in sphagnous or sandy 



swamps (the American and European species acaulesccnt, with a rosulate 



tuft of leaves, and simple scapes which are circinate when young ; racemes 



mostly unilateral). Leaves furnished with numerous long reddish glanduli- 



ferous hairs. — Sun-de^c. 



The pollen-grains in D. filiformis are connected by minute threads ; as in OEno- 

 thera. All the N. American species have usually three 2-parted or 2-cleft styles. 



1. D. hreinfolia (Pursh) : leaves forming a close tuft, broadly cuneiform, 

 very obtuse, on petioles scarcely longer than the limb ; petals (rose-color) 

 obovate, more than twice the length of the calyx ; styles deeply 2-parted, 

 the divisions a little dilated and membranaceous above ; seeds oval (the testa 

 not arilliform), minutely ribbed. — Pursh! Ji. 1. j). 211; Nutt.I gen. 1. p. 

 141; DC. prodr. 1. p. 318. 



/?. major : leaves on longer petioles. Hook. jour. bot. 1. p. 194. 



Borders of sandy ponds (occasionally in exsiccated places, Nutt.), N. Ca- 

 rolina ! to Florida ! and Louisiana ! /?. Louisiana, Drummond ; Apalachicola, 

 Florida, Dr. Chapman ! — Tuft of leaves about an inch in diameter. Scape 

 filiform, in flower 2-4, in fruit sometimes 6-8 inches high, 2 or 6-10-flowered : 

 flowers nearly half an inch in diameter when expanded. Sepals and pedi- 

 cels often minutely glandular when young. — Our specimen from Apalachi- 

 cola, which we refer to p. major of Hooker, has the less broadly cuneifonn 

 limb of the leaves scarcely one-third as long as the petiole, and the scape aknost 

 capillary : it will perhaps prove to be a distinct species. 



2. D. rotundifolia (Linn.) : leaves orbicular, spreading, abruptly attenuate 

 into the long hairy petiole ; petals (white) oblong; styles very short, 2-parted, 

 with subclavate divisions ; seeds linear, with a loose, arilliform testa. — Eng. 

 hot. t. 867 ; Michx. ! Ji. l.p. 186 ; Ell. sk. l.p. 375 ; Nutt. ! gen. I. c. ; DC. 

 prodr. 1. p. 318; Hook.IJl. Bor.-Am. 1. p. 81. D. capiUaris, Poir. (?); 

 DC. I. c. 



Sphagnous swamps, from the Arctic Circle and Unalaschka to Florida! 

 and Alabama! June-Aug. — (2) (© DC.) Scape 4-8 or 10 inches high, 

 5-10-flowered: raceme sometimes bifid. Capsule oblong. 



3. D. longifolia (hinn.) : leaves cuneate-oblong, erect-spreading, attenuate 

 into the long and slender naked petiole ; caudex ascending or decumbent, 

 often elongated; scapes declined at the base (petals white, short); styles 

 very short, the divisions slightly thickened ; seeds oblong, slightly punctate, 

 the testa not arilliform.— i;«o-. bat. t. 868; Michx.! JI. l.p. 186; Nutt.! 

 gen. I. c; Torr.! JI. l.p. 331 (e.vcl. syn. Goldie.). D. Arnericana, Muhl. ! 

 cat. p. 33. D. intermedia y. Americana, DC. I. c. D. foliosa, Ell. sk. 1. p. 

 375; DC. I.e. 



In sphagnous and very wet sandy swamps, Canada ! to Alabama! and 

 Louisiana. June-Aug. — H Scapes 3-8 inches high, several-flowered, at 

 length about twice the length of the leaves. Capillary stipules conspicuous. 

 Capsule obovate-oblong. 



4. D. Anglica (Huds.) : leaves linear-spatulate, erect : petioles elongated 

 (scarcely longer than the limb, DC.) ; seeds with an arilliform testa. Hook. 

 —Huds. fl. Angl. p. 135; DC. I. c. ; Hook. JI. Bor.-Am. 1. p. 81. 



Near Cumberland House, lat. 54°, Richardson; and N. W. Coast, Men- 

 zies, ex Hook. — Scape erect, twice the length of the leaves. 



5. D. linearis (Goldie) : leaves linear, very obtuse, erect, on slender naked 

 petioles ; scapes 1-3-flowered, at first shorter, at length a little longer than 

 the leaves ; seeds oval-oblong, smooth and shining, the testa not arilliform. — 

 Goldie, in Edinb. phil. jour. 6. p. 325 ; Hook. ! JI. Bar.- Aon. 1. p. 82. t. 

 27. A. 



