24 



ends of the branches: calyx clavate in 

 fruit, with broad green nerves; teeth 

 acutish with membranous ciliated 

 margins: mature capsule short, ob- 

 long, not exceeding 2 lines in diameter: 

 petals greenish white or roseate; claws 

 villous toward the base, with broad 

 entire or toothed auricles above; blade 

 bifid; the short oblong lobes with or 

 without small lateral teeth; append- 

 ages lance-oblong. Cuyamaca (Palm- 

 er). Baja Cal. (Or). 



SILENA PARISHII S. Watson. 



Grayish pubescent: root simple, 

 thick, with a branching rootstock: 

 stems several, decumbent, a span 

 long: leaves lanceolate, acuminate, 

 sessile, 1-2 in. long: the lower oblance- 

 olate: fls aggregated at the ends of the 

 branches: calyx tubular, narrowed be- 

 low, an inch long, with - narrow subu- 

 late teeth 3-4 lines long: petals narrow, 

 scarcely exserted from the calyx, cleft 

 into 4 or more filiform segments: seeds 

 doubly crested with short vesicular 

 hairs. San Bernardino mts. 



CERASTIUM NUTANS Raf. 



Pubescent, viscid annual, 8-18 in. 

 high: stems branched: leaves oblong- 

 lanceolate, acute; the lowest narrowed 

 toward the base: fls numerous in an 

 open dichotomous cyme: calyx about 

 4 mm long: petals somewhat exserted, 

 oblanceolate, bifid: pedicels elongated, 

 ascending or spreading, tending to be 

 hooked -or nodding at the summit: 

 capsule 4-6 lines long, nodding but 

 curved upward. United States. 

 CERASTIUM VISCOSUM Linn. 



Annual, viscid-pubescent, 3-9 in. 

 high: leaves oval -or elliptic-oblong, 

 very obtuse; the lowest narrowed be- 

 low to a .short margined petiole: fls 

 small, at first densely clustered at the 

 ends of the branches, becoming laxer 

 in fruit, but even the longest pedicels 

 not exceeding the acute sepals (l%-2 

 lines long): bracts herbaceous: petals 

 scarcely equalling the calyx: stamens 

 frequently 5. San Diego (Or). 

 STELLARIA NIT ENS Nutt. 



Annual, slender, erect, shining: stems 

 filiform, forked several times, leafyand 

 slightly pubescent near the base, al- 

 most naked and quite glabrous above: 

 leaves of 2 forms, the lowest (1-3 pairs) 

 ovate, acute, only 2 lines long, on slen- 

 der petioles of somewhat greater length, 



not always persisting; the other leaves 

 lance-linear-acute, 3-5 lines long: se- 

 pals very acute, scarious-margined, 1- 

 3-nerved: petals y 2 as long as sepals, 

 sometimes absent: capsule oblong, 

 about equalling the calyx. British Co- 

 lumbia to Baja Cal. Utah. 



STELLARIA MEDIA Linn. 



A low annual: stem pubescent in 

 lines: leaves acute; the upper narrow- 

 er sessile, the lower on pubescent nar- 

 rowly margined petioles: calyx gland- 

 ular-pubescent, equalled or slightly 

 exceeded by the capsule: petals shorter 

 than the sepals: stamens 3,5, or 10. 

 Common chickweed. 

 ARENARIA MACRADENIA Watson. 



Glabrous or nearly .so: rootstalk 

 more or less ligneous, extensively and 

 irregularly branched: sterns stout for 

 the genus, 6-15 in. high, knotted with 

 the enlarged nodes: leaves chiefly cau- 

 line, glaucous, rigid, pungent, %-2 in. 

 long: fls larger than in the related 

 species, in an open cyme: sepals fleshy 

 subcarinate, 2&-2% lines long, with 

 membranous margins: petals rquch ex- 

 serted, obovate or oblong with an ob- 

 tusish sometimes auricled base: sta- 

 mineal glands moderately developed: 

 st%mag subcapitate. M'ohave river 

 (Palmer). 

 Variety PARISHIORUM Robinson. 



"Smooth or minutely glandular-pu- 

 bescent: caudex scarcely ligneous, 

 densely multicipital: stems slender; 

 nodes not conspicuously enlarged: 

 leaves chiefly basal: petals narrowed 

 at the base, shorter than or barely 

 equaling the sepals, the latter fully 3 

 lines in- length: stamineal glands very 

 large." Robinson, Am ac pr 29:296. 

 Common on mts. bordering on the Mo- 

 have Desert (Parish 1330). 

 ARENARIA MACROPHYLLA Hook. 



Stems decumbent, angled, pulveru- 

 lent-pubescent: leaves lanceolate, acut- 

 ish to acuminate at both ends (less 

 commonly elliptic, obtusish), 1-3 in. 

 1-ong, glabrous, more or less punctate: 

 peduncles slender, terminal or becom- 

 ing axillary, 1-5-fl'd: sepals ovate-lan- 

 ceolate, very acuminate, exceeding the 

 petals. San Diego (Or) to British Am- 

 erica. 

 ARENARIA ALSINOIDES Willd. 



Minutely pubescent with slightly 

 hooked hairs or smoothish: stems long, 



