ARENARIA. CARYOPHYLLACE^E. 85 



smaller, in a nearly naked racemose panicle, capsule more oblong. Port- 

 land, Oregon and vicinity, (Europe). 



* * Leaves very narrowly linear commonly acerose, often rigid and 

 pungent. 



+- Sepals broadly ovate obtusish, sometimes apiculate : flowers not 

 densely aggregate. 



A. capillaris Poir. in Lam. Encycl. vi. 380.. Leaves chiefly grouped 

 at the base in fascicles upon a multicipital caudex, ^>-2}/ inches long, 

 somewhat pungent, little spreading; the cauline few pairs, much reduced: 

 stems 4-8 inches in height: petals obovate, considerably exceeding the 

 short obtuse sepals. Idaho to the Rocky Mountains. 



A. formosa Fisch, in DC. Prcdr. i, 402. More or less glandular-pu- 

 bescent above, erect, 3-12 inches high : leaves linear subulate, half to two 

 inches long, pungent : the cauline few, short and erect: flowers few in an 

 open cyme ; bracts small, lanceolate : sepals ovate, acute, 1-2 lines long, 3- 

 nerved, membranously margined : petals half longer: capsule somewhat ex- 

 ceeding the calyx. In the higher mountains from Brit. Columbia to 

 California. 



A. acnleata Watson Bot. King 40. Leaves fascicled at the ends of nu- 

 merous barren shoots, glaucous ; rigid, subulate and aculeate: stems 

 nearly naked, somewhat scabrous above: flowers few, on long slender 

 erect pedicels : sepals ovate acute: capsule becoming twice longer than the 

 calyx, splitting into 3 2-toothed valves: seeds smooth. High hills, south- 

 east Oregon to Nevada. 



-*- -i- Sepals ovate or ovate-lanceolate acuminate, shorter than the 



petals. 



A. congesta T. & G. Fl. i, 178. Smooth, glaucous, 4-12 inches high : 

 leaves very narrowly subulate, scabrous on the margin, often pungent, the 

 lower 1-3 inches long ; cauline 6-12 lines long : flowers in 1-3 dense subum- 

 bellate fascicles, with large dilated membranaceous bracts : sepals ovate- 

 oblong, strongly concave with scarious margins, 1-3 lines long, acute : pet- 

 als narrowly oblong, nearly twice as long .as the calyx: capsule equalling 

 the calyx. In the mountains from Washington to California, Nevada and 

 Colorado. 



----- Sepals lanceolate to lance-linear attenuate, equalling or 

 exceeding the petals. 



-M- Flowers cymose, not densely aggregated. 



A. Burkei. A. Fendleri var. subcongesta Watson Bot. King 40. Stems 

 several from a more or less ligneous caudex, smooth or glandular, 4-6 

 inches high, many-leaved at base: leaves setaceous, somewhat flattened, 

 glabrous : flowers more or less clustered upon short pedicels or the lateral 

 ones sessile : bracts broad and scarious : petals but little exceeding the ovate 

 acuminate scarious sepals. On bleak hilltops, eastern Oregon and Nevada 

 to Brit. Columbia and the Rocky Mountains. 



A. Fendleri Gray PL Fendl. 13. Stems simple, 6-15 inches high gla- 

 brous below, more or less glandular-pubescent above, imbricately many- 

 leaved at base, leaves long, erect setaceous somewhat flattened scarious-ser- 

 rulale glabrous: cymes strict, few-flowered: pedicels slender: sepals 

 glandular pubescent, ovate- lanceolate, cuspidate-acuminate, green with a 

 broad scarious margin, nearly equalling the white obovate petals: capsule 

 about equalling the calyx. New Mexico, etc., to eastern Oregon. 



n- *> Flowers densely fascicled at the end ef the stem. 

 A. Fran klinii Dougl. in Hook. Fl. i, 101 t. 35. A span or less in height : 

 branches erect, fastigiate, numerous fragile: leaves smooth subulate-setaceous, 

 very pungent, an inch long: flowers fascicled; sepals subulate scarioue, 



