244 CARYOPHYLLACE^. Arenaria. 



brevifolia, Cliapm. Fl. 49. — On rocks, Georgia, Tatnall Co., Nuttall, Stone Mountain, Canhy, 

 Gray, Small ; fl. April, May. Apparently the most rare and local eastern species. 



* * * Terrestrial annuals of the Pacific Slope : sepals neither indurated nor very strongly 



nerved. 



-t— Seeds ranch flattened and margined. 



A. Douglasii, Fenzl. Thinly glandular-pubescent and somewhat viscid, or nearly gla- 

 brous : stems much branched, 2 to 15 inches high: leaves attenuate to filiform points: pe- 

 duncles filiform : flowers numerous, larger than in the related species, 4 to 5 lines in diameter ; 

 sepals ovate, thin-margined, obscurely or more or less distinctly ribbed : petals obovate, cou- 

 spicuous : capsule subglobose ; valves rounded at the apex ; seeds large, smooth, or with 

 fine radiating striatiou, reniform, broadly margined. — Fenzl ace. to Torr. & Gray, Fl. i. 

 674 ; Durand, PI. Pratt. 83 ; Brew. & Wats. Bot. Calif, i. 69; Greene, Fl. Francis. 124. A. 

 verna, P, Hook. & Arn. Bot. Beech. 325. Greniera Douglasii, Gay, Ann. Sci. Nat. ser. 3, 

 iv. 27. Alsine tenella, Torr. Bot. Mex. Bound. 36 (from char, and hab.). — Barren hillsides 

 and grassy slopes, S. Arizona, Palmer, and S. California to Oregon, Howell, Henderson ; fl. 

 May, June. Some smaller flowered specimens with seeds of A. Douglasii have been collected 

 by Thurber near San Diego, Calif. 



-)— -i— Seeds not flattened nor thin-margined. 



A. Howellii, Watson. Finely glandular-pubescent : stem terete, purple, profusely branclied, 

 more than a foot high : leaves rather thick, obtuse, 4 to 7 lines in length ; the floral much 

 reduced : flowers 2^ to 3 lines in diameter : petals oblong, little exceeding the ovate glandu- 

 lar nerveless sepals : capsule ovoid, pointed ; valves narrowed to an acutish apex ; seeds 

 dark, slightly tuberculate-crested. — Proc. Am. Acad. xx. 354. — Oregon, in the Coast 

 Mts., near Waldo, Th. Howell, June 5, 1884. 



A. Californica, Brewer. Smooth, with delicate filiform stems branching from the base, 

 erect, 2 to 4 inches in height : leaves very short, slightly fle.shy, 1 to 2 lines in length, obtuse : 

 flowers 4 lines in diameter : petals oblong, about twice the length of the ovate-oblong nerve- 

 less or inconspicuously ribbed sepals : seeds small, finely roughened. — Brewer in Boland. 

 Cat. 6; Brew. & Wats. Bot. Calif, i. 69; Greene, Fl. Francis. 124. A. brevifolia, var. (?) 

 Californica, Gray, Proc. Calif. Acad. Sci. iii. 101. — Dry hills, sandy soil. Central California 

 to Grant's Pass, Oregon, Howell ; fl. March to May. 



A. pusilla, Watson. Smooth, very diminutive, I| to 2 inches high: stems purplish, fili- 

 form, branched from the base ; leaves obtusish, only 1 to 2 lines in length : sepals not so 

 strongly nerved as in the preceding, 1 to 1| lines in length: petals minute or wanting: 

 seeds minute, smooth. — Proc. Am. Acad. xvii. 367. A. Californica, Wats. Bot. Calif, ii. 

 435, not Brew. — Plains, N. California, about Yreka, Greene, to the Dalles of the Columbia, 

 Howell Bros. ; Washington, at White Salmon, Suksdorf and Pullman, Piper, where said to 

 be common along fences, etc. ; fl. April, May. This species bears the closest habital resem- 

 blance to A. capillipes, Boiss., of Spain, .but lacks the miuute pulverulence of that species. 



* * * * Annuals or slender-stemmed loosely matted perennials, 5 to 15 inches in height : 

 sepals lanceolate, acuminate or attenuate, strongly 3-5-nerved. 



■h- Puberulent, at least on the pedicels. 



A. tenella, Nutt. Finely glandular-pubescent : stems very slender, dichotomously branched 

 almost from the base, 3 to 8 inclies in height : leaves attenuate from a connate prominently 

 ribbed base to a filiform often curved apex, 3 to 5 lines long ; the uppermost considerably 

 reduced : pedicels filiform, several times as long as the strongly 3-ribbed sepals ; the latter 

 equalled or more or less exceeded by the oblong petals : valves of ovoid capsule exceeding 

 the sepals ; seeds small, margined with a fine muriculate crest (under a strong lens). — 

 Nutt. in Torr. & Gray, Fl. i. 179; Eaton & Wright, N. A. Bot. 133 (excl. Arkansas spec.) ; 

 Macoun, Bot. Gaz. xvi. 286 ; not Kit., which is wholly obscure. A. tenuifolia, var. Americana, 

 Fenzl in Torr. & Gray, Fl. i. 674. Greniera tenella. Gay, Ann. Sci. Nat. ser. 3, iv. 27. 

 Alsine tenella, Torr. Bot. Wilkes Exped. 243. — Rocky places, Oregon, Nuttall, Tolmie, Hall, 

 Howell, to Brit. Columbia, at Kamloops, ace. to J. M. Macoun, and Nanaimo, Miss Cooleij ; 

 fl. May to July. Like ^1. Granlandica of the Eastern States, this species seems to occur 

 either in mats or in a segregated state. In the former condition it considerably resembles 



