CARYOFEYLLAGEAE. 141 



4. Alsink pubeka (Michx.) Britton. Great Chickweed. M. p. 395. Shaded 



rocks. Spring. 

 Fhiladelphia—YaWeys of Schuylkill and Wissahickon (Br.). Bucks— 

 Near Sellersville (Fr.). Montgomery— Y alley of Schuylkill (Br.), Sum- 

 neytown (Ke.)- Delaware— (P.). Chester— (F.). Lancaster— Feduch 

 Bottom, Haines' Station (Ca.). 



5. Alsine LOiMGiFOLiA (Muhl.) Britton. Long-leaved Stitchwort. M. p. 



396. Low meadows and swamps. Spring. 



6. Alsine graminea (L.) Britton. Fields and roadsides. Spring. 



Fhiladelphia—ShavcmoTit (Sa.), Chestnut Hill (VP.). Buds— TuWy- 

 town (Ja.). Moiitgomcrii—Jyj Eoek (Le.), Areola (Mar.). Delaware— 

 Lansdowne (Pe.). 



Burlington— Mooresto'wn, Jos. Walton (He.). 



8. CEEASTIUM L. Mouse-ear Chickweed. 



Petals equalling the sepals, or shorter. 



Pedicels not longer than the sepals; flowers glomerate. 



1. C. viscosum. 

 Pedicels at length longer than the sepals; flowers eyraose. 



Leaf -blades less than 4 mm. long; sepals 3-3..5 mm. long; capsules 



5-7 mm. long. 2. C. semidecandrum. 



Leaf-blades over 4 mm. long; sepals 5-6 mm. long; capsules 7-10 

 mm. long. 3. C. vulgatum. 



Petals manifestly longer than the sepals (rarely wanting). 

 Annuals, viscid pubescent; flowers 4-6 mm. broad. 



4. C longipedunculatum. 

 Perennials, glabrous or pubescent; flowers 10-20 mm. broad. 



5. C. arvense. 



1. Cerastium \7SC0SUM L. M. p. 397. Waste places and meadows. Spring. 



2. Cerastium semidecandrum L. M. p. 397. Dry sterile soil. Spring. 



Lancaster — (P.). 



Atlantic— "blLay's Landing (C). 



3. Cerastium vulgatum L. M. p. 397. Fields and copses. Summer. 



4. Cerastium longipedunculatum Muhl. M. p. 397. Moist, shaded places. 



Spring. 



5. Cerastium arvense L. M. p. 398. Dry and rocky places. Spring. 



5o. Cerastium arvense oblongifolium (Torr.) Holl. & Britton. M. p. 

 398. Eocky places. Spring. 

 jBwcfcs— New Hope (Sts.). Detoware— Williamson (Cr.), Media (He.) ^ 

 (Sa.), barrens of Middletown (B. Sm.). Chester— ^ear Oxford, Forter 

 (B. C), Westtown (Ha.) (Le.). Lancaster— (F.). Dauphin — (F.). 

 5b. Cerastium arvense velutinum (Eaf.) Britton. M. p. 398. Eocky 

 places. Spring. 

 I>eiaM;are— Mineral Hill < He.), Cheyney (Ws.). Chester— {F.). Lan- 

 caster— '^evf Texas (Ca.). 



9. HOLOSTEUM L. 



1. Holosteum umbellatum L. M. p. 398. Fields and roadsides. Spring. 

 Lancaster— Ijaneaster, A. A. Heller (B. C), Conestoga (Li.). Dauphin 

 — Black Horse, Middletown (S. Tr.). 



