230 CARYOPHYLLACEiE. Cerastium. 



Fenzl, mentioned in Watson's Index (but never published?), represented by.Drummond's 

 no. 30 of his 3d Texan Coll., appears to be only a more slender form of the above. Exactly 

 the same thing, however, has been found at Milledgeville, Ga., by Dr. Boykin (Short Her- 

 barium), thus considerably extending the range of the species. A very leafy and velvety- 

 tomentose form from Willow Spring, Arizona, Palmer, is worthy of mention. 



Var. COmpactum, Robinson. Inflorescence capitate-umbellate : pods very slender. 

 — Proc. Am. Acad. xxix. 278. C. nutans, var. com;;ac<«?«, Engelm. in herb. — A marked 

 variety or form from the Bad Lands of Nebraska, Harden ; Belknap, N. Texas, Hai/es ; 

 False Washita, Ind. Terr., Palmer. 

 C. nutans, Kaf. A pubescent and viscid annual, 8 to 18 inches high: stems branched: 

 leaves oblong-lanceolate, acute ; the lowest narrowed toward the base : flowers numerous in 

 an open dichotomous cyme : calyx about 2 lines in length : petals somewhat exserted, 

 oblanceolate, bifid : pedicels elongated, ascending or spreading, tending to be hooked or 

 nodding at the summit: capsule 4 to 6 lines long, nodding but curved upward. — Free. 

 Dc'couv". 36, & Desv. Jour. Bot. iv. 269 (1814); Gray, Gen. 111. ii. t. 114. C. longe pedunculatum, 

 Muhl. Cat. 46, the earliest name, but used without satisfactory characterization. C. glutino- 

 sum, Nutt. Gen. i. 291. C. apricum, Schlecht. Linnaa, xii. 208. C. oblong [folium, Anderson, 

 Cat. 118. — Common and widely distributed from Nova Scotia to the Pacific and from Hud- 

 son Bay and Little Slave Lake (ace. to Macoun) to New Mexico. (Mex.) Like the last, 

 paler green than the other common species. Cleistogamy in this species has been noted by 

 Mr. Thos. Meehan, and apetalous specimens have been found at Wawa, Penn., Brinton. 

 Arizona forms of this species also differ slightly in habit, but lack technical characters for 

 satisfactory distinction. 



C sericeum, Watson. Annual : stems one or many, 1 to 2 feet high, stout for the genus, 

 sericeous, very leafy below : leaves oblong-lanceolate, sessile, 1 to 2 inches long, 3 to 6 lines 

 broad ; the lower cinereous with dense flocculent wool ; the upper green : flowers numerous 

 in spreading cymes : calyx 2\ lines long, scarcely exceeded by the corolla : seeds larger and 

 rougher than in the preceding. — Proc. Am. Acad. xx. 354. — S. Arizona in the Huachuca 

 Mts., Lemmon ; Santa Rita Mts., Pringle. 



* * Flowers larger; petals usually twice as long as the calyx (except in C. alpinum, var. 



Beeringianum) : indigenous species. 

 C. arvense, L. Perennial : stems several, weak, usually almost naked above : leaves linear 

 to narrowly lance-oblong : petals obcordate : pod in the typical form scarcely longer than 

 the calyx. — Spec. i. 438; Hook. Fl. Bor.-Am. i. 104; Torr. & Gray, Fl. i. 188; Hollick 

 & Britton, BulE" Torr. Club, xiv. 45-51, t. 63-65. "? C. hyhridum, Muhl. Trans. Am. Phil. 

 Soc. iii. 169. C. Pennsylvanicum, Hornem. Hort. Hafn. 435. — Rocky soil, common; fl. 

 May to July. (Eu., Asia, S. Amer.) Very variable in size, pubescence, relative length of 

 its capsules, etc. Var. angustifolut.m, Fenzl, 1. c. i. 413 (var. Andreivsii, Bailey, Bot. Gaz. 

 vii. 109), with cauline leaves narrowly oblong to linear, strongly 1-nerved, attenuate at the 

 base, much fascicled, 9 to 15 lines in length, and var. latifolium, Fenzl, 1. c. 412, with 

 shorter oblong leaves (6 to 8 lines long, broad at the base), are forms strikingly different in 

 their extremes, but rather freely intergrading and often difficult to distinguish. The latter 

 is perhaps a little more common in the Rocky Mts., but extends eastward to Labrador. 

 Better marked are the following. 



Var. oblongifolium, Hollick & Britton. Leaves oblong or lance-oblong, obtuse 

 or obtusish : capsule longer, H to 2| times as long as the calyx. — Bull. Torr. Club, xiv. 47, 

 t. 63. C. oblongifolium, Torr. Fl. N. & Midd. States, 460 ; Torr. & Gray, Fl. i. 188. ? C. di- 

 chotomum, Muhl. Cat. 46. C. arvense, var. hracteatum, MacMillan, Metasp. Minn. Val. 223. 

 ? C. hracteatum, Raf. Prec. Decouv. 36. — Nova Scotia to Virginia and westward to Montana, 

 Scribner, and New Mexico, Vasey. This variety has been widely drawn by its authors to 

 include narrow-leaved forms as well as the original rather broad-leaved C. oblongifolium, 

 extended series of specimens showing complete transitions. 



Var. maximum, Hollick & Britton, I.e. 47. Taller, 1 to 2 feet high: leaves 

 elongated, lanceolate, acutish, 2 to 3 lines broad : inflorescence very spreading : capsule 

 equalling or half exceeding the calyx or nearly twice its lengtli. — C. ohiongi folium, Torr. 

 Pacif. R. Rep. iv. 70. C. pilosum, Brew. & Wats. Bot. Calif, i. 67, not Ledeb. — California, 



