86 CARYOPHYLLACE.E. ARENABIA. 



broadly 1 -nerved, about equalling the oblong obtuse petals: flowers on short 

 pedicels in dense fascicles, crowded with bracts similar to the leaves. On 

 sandy banks along the Columbia river. 



5. ALSINE Wahl. (as genus, not Linn .). Capsule ovoid, 3- 

 valved ; valves entire ; seeds not strophiolate : matted perennials 

 or delicate annuals, usually with narrow linear subulate or ace- 

 rose leaves. 



* Palustrine perennial with weak elongated stems, narrow linear 

 or lance-linear leaves and axillary long-peduncled flowers. 



A. paludicola Robinson I.e. 298. Glabrous, flaccid : stems several, 

 subsimple, procumbent, rooting at the low r er joint, sulcate, shining, leafy 

 throughout: leaves uniform, flat, 1 -nerved, acute, spreading, %-l)i> inches 

 long, 1-3 lines in breadth, often punctate, somewhat connate, slightly 

 scabrous upon the margins : peduncles solitary in the axils, 1-2 inches 

 long, spreading or somewhat deflexed : sepals nerveless not at all indur- 

 ated, acutish, about half the length of the obovate petals. In swamps 

 along the Coast, San Francisco to Seattle, Washington. 



* * Terrestrial annuals: sepals neither indurated nor very strongly 

 nerved. 



= Seeds much flattened, and margined. 



A. Douglasii T. &. G. Fl. i, 674. Sparingly pubescent with spreading 

 hairs or glabrous, slender, much branched, 3-10 inches high: leaves filiform, 

 half to an inch or more long: flowers rather large on long filiform pedicels: 

 sepals oblong-ovate obtusish or acute, obscurely 3-nerved, 1| lines long: pet- 

 als obovate, 2-2^ lines long: capsule globose, equalling the calyx: seeds 

 large, flat, smooth, acutely margined. . Dry hillsides, (southwestern Oregon 

 and California. 



H- -t- Seods not flattened nor winged. 



A. Howellii Watson Proc. Am. Acad. xx, 354. Glandular hispid but 

 the internodes usually glabrous: widely branching, 6-12 inches high: leaves 

 thick, narrowly lanceolato or linear, with base 6-9 lines long, blunt, spread- 

 ing: flowers small on slender pedicels: sepals a line long, nerveless: petals 

 tMice longer, narrowly oblong: capsule ovate, a little exceeding the sepals: 

 seeds black, turgid, with several rows of. minute tubercles along the 

 rounded margins. On dry foothills, eastern base of the Coast Mountains in 

 Josephine county, Oregon. 



A. California Brewer in Bol. Cat. 6, Brew. & Wats. Bot. Cal. i, 69. 

 Glabrous, very slender, 2-6 inches high: leaves lanceolate, 1-2 lines long, 

 obtusish: flowers small on slender pedicels: sepals oblong-ovate, acute, 3- 

 nerved, 1-2 lines long: petals spatulate, 2-3 lines long: capsule oblong: 

 seeds small, sharply muriculate. Moist places, southwestern Oregon and 

 California. 



A. pusilla Watson 1. c. xvii, 367. Very slender, an inch or two high ; 

 glabrous: leaves lanceolate, thick and bluntish, a line or two long: sepals 

 lanceolate, acute, obscurely 1-nerved: petals very small or wanting: capsule 

 o'jlong-ovate, not exceeding the sepals: seeds turgid and smooth. Near 

 The Dalles, eastern Oregon and Washington, in dry prairies: also on the 

 plains about Yreka, northern California. 



* * Annuals or loosely matted perennials: sepals lanceolate, acumi- 

 nate or attenuate, strongly 3-5 nerved . 



A. tenella Nutt. T. & G. Fl. i, 179. Slender, 2-4 inches high, smooth, 

 leaves filiform- subulate, acute: peduncles minutely glandular: sepals ovate- 

 . lanceolate, acute, 3-nerved 1.)^ lines long: petals oblong, 2-2% lines long: 



