AreiHiria. CAUVoril VLLACK.i:. 239 



Var. major, Hook. Taller: leaves longer, often 15 lines in loiif,'t)i, oI.Imh;,' or <.MaiHC<)- 

 late, more poinUii and liecidedlv narrowed to liie liase — Fl. Hor.Aiii. i lOi'. ,1. >,irh>ti- 

 sis, Dietr. Syn. I'l. ii. 1505. jioitrhni/a ul.l„„<ji/olla, 'I'orr. ."t (;ra.v. M. i. ITC. ILmLrnya 

 pepluides, var. oU<>ii;/i/<>liu, Kenzl, 1. c. — WaMliin^ton to Alaska. IniiR-rfe.t Kpecimons (|K;r- 

 haps of the type rather than the variety) from Yellowstone Lake. Wyominj;. eollectc.l Uy 

 Adams on the Ilayden Siirv.. and kindly eommiinieatcd hy Professor Porter, (thow a uote- 

 worthy inland occurrenie of this usually maritime sp<-cie». (Silteria, Japan.) 

 § 3. MicRCKlA, Benth. & Hook. 1. c ir>l. Styles 3 to O; ovarv 3-'i-<-cllc(l : 

 capsule large, depressed-j^lohose, souu'what inflated, niany-seeded ; swds not 

 stropliiolate. — Merckia, Fiscli. in Cliaiu. &, Sclileclit. Linnjca, i. .09; Fenzl, 1. r. 

 3iiU; Pax in Engl. & Prantl, Nat. PManzonf. iii. Ab. II), 84. Merkia, Torn. «fc 

 Gray, Fl. i. 17G. — A single glandular and slightly fleshy species of the North- 

 west. 



A. physodes, Fiscn. Perennial, cespitose : stems weak, deeumhent, 3 to fi inches in len>,'th : 

 leaves ovate, cus])idately pointed, 4 to 6 lines lonj; : Huwers sc.litary at the summit of the 

 stem or becoming lateral : sepals laiiee-oblong, acute, .3 lines in length, eipialling or slightly 

 exceeding the petals : capsule 4 lines (said to become half an inch) in diameter.— Ki.sch. in 

 DC. Prodr. i. 413; Wats. Bibl. ludex, 97. Merckia physodes, Fi.srh. I.e. 59; Hook. 1. c 

 103; Terr. & Gray, 1. c. Stellaria orullfolia. Hook. 1. c. 97 ; Hook. & Arn. Bot. Beech. \T>. 

 — Brit. Columbia to N. Alaska; fl. .July, August. (E. Siberia.) 



§ 4. Arenaria proper. Styles normally 3 : capsule ovoid, dehiscent hv 2- 

 toothed or -cleft valves; seeds not strophiolate. — ^^r/mnV/ of many authors, .is 

 Fenzl in Ledeb. Fl. Ross. i. 360 ; Kegel, 1. c. 215 ; Pax, I.e.; William.s, Hull. 

 Herb. Boiss. iii. 593, etc. 



♦ Leaves ovate, elliptic or linear, not acerose. 

 +- Annuals. 

 A. ."SERPYLLiKbi.i.i, L. (TnvMK-LK.WED SANDWORT.) Annual, finely pul)0.scent, much 

 branched: leaves very short, 2 to 3j lines in length, ovate, acute or acuminate, rather 

 distinctly 3-5-nerved, rounded at the ba.se; only the lowest being narrowed to sliort peti- 

 oles: flowers numerous in open leafy cymes; pedicels 1 to 3 times the length of the ovate- 

 lanceolate acuminate hispidulous sepals: petals small, about two thirds the length of the 

 sepals: capsule flask-shaped. — Spec. i. 423; Michx. Fl. i. 274; Kll. Sk. i. 518; Torr. & 

 Gray, Fl. i. 182. — Sandy soil, Lower Canada and New Kngland to Florida, westward to 

 Oregon, Washington, and Brit. Columbia; fl. A])ril to June. (Nat from F,u.) 



Var. TKXLioK, Koch. More delicate: leaves reduce<I, lanceolate: flowers smaller in a 

 nearly naked raccmo.se panicle: capsule more oblong. — Synop. 117. A. le/iiiM-lndos, (iuns. 

 Fl. Sic. Syn. iii. 824. — Dry situations, less frequent than the type; Maine, Femald : Ver- 

 mont, Boon ; Oregon, Brandeqee ; W;ishiugton, Suksdiirf; fl. Mav to August. (Adv. from 

 Eu.) 



A. Benthdmii, Fenzl. A slen<ler annual, branched from the ba.se; brandies finely pulM-.*- 

 cent in lines: leaves short, 3 to 4 lines in lengtli, elliptic-lanceolate, acute and apiculate, 

 often punctate, narrowed to sessile bases, or the lowest to short ciliated petioles; floral 

 leaves much reduced : pedicels filiform, many times exceeding the ovate ncuminate glabnms 

 often punctate sepals: seeds dark br<iwn. minutely tubercuhite. — Fen/1 in Torr & (•ray, 

 F'l. i. 675; (Jray, PI. Wright, ii. 18; Torr. Bot. Mex. Bound. 3r.. .1. m-mticJn, Buckley, 

 Proc. Acad. Philad. 1861, 449. — Rocky ground, Texas, where first coll. by Drummond ; New 

 Mexico, Thtiiitr. 



+- -t- Perenni.ils. 



A. ciliata, L- .Minutely glandiilarpuberulent : stems numerotis, slender, terete, leafy, 

 densely m;itted, or in less exposed situ:itions spreading and ascemling. 1 to 5 inches long, 

 terminally 1-3-flowered : leaves small, ovate-<ilil"ng or lance-oldong, s<arcely acute, I to .'l 

 lines in length, distinctly ciliato near the cuneatc base : pcdunclca erect, 2 to 5 liue« long : 



