86 CARYOPHYLLACEX. ARENARIA. 
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. Atsine 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 1. c. 298. Glabrous, flaccid: stems several, 
subsimple, procumbent, rooting at the lower joint, sulcate, shining, leafy. 
throughout: leaves uniform, flat, 1-nerved, acute, spreading, 34-144 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 ineh 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, 2-24 lines long: capsule globose, equatling the calyx: seeds 
large, flat, smooth, acutely margined. Dry hillsides, southwestern Oregon 
and California. 
+ + Seeds not flattenec 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 lanceolate or linear, with base 6-9 lines long, blunt, spread- 
ing: flowers small on slender pedicels: sepals a line long, nerveless: petals 
twice 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. Californica 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 
olong-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 1144 lines long: petals oblong, 2-2%% lines long: 
