CAEXQPSYLLAGEAE. 141 



4. Alsine pubera (Michx.) Britton. Great Chickweed. M. p. 395. Shaded 



rocks. Spring. 

 Philadelphia-- "Valleys of Schuylkill and Wissahickon (Br.). Buclcs— 

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

 neytown (Ke.). Delaware— (Pj). Chester— (P.). Lancaster— Peach 

 Bottom, Haines' Station (Ca.). 



5. Alsine longifolia (Muhl.) Britton. Long-leaved Stitchwort. ML p. 



396. Low meadows and swamps. Spring. ' 



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



Philadelphia— Shawmont (Sa.), Chestnut Hill (VP.). Buclcs— Tully- 

 town (Ja.). Montgomery— Ivy Book (Le.), Areola (Mar.). Delaware— 

 Lansdowne (Pe.). 



Burlington— Moorestown; Jos. Walton (Hei). 



i 8., CERASTIUM L., , Mouse-ear Chicjswebd., ., 



Petals equalling the sepals, or shorter. 



Pedicels not longer than the sepals; flowers glomerate. . , . 



1. C. viscoswm. 

 Pedicels at length longer than the sepals; flowers cymose. 



Leaf -blades less than 4 mm. long; sepals 3-3.5 mm., long; capsules 



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

 Leaf -blades over 4 inm. 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. 0. arvense. 



' 1. Ceeastium visoosum L. M. p. 397. Waste places and meadows. Spring. 



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



Lancaster— (P.) . 



Atlantic— May's Landing (C). 



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



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



Spring. 



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



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

 398. Bocky places. Spring. 

 Bucks— New Hope (Sts.). Delaware— Williamson (Cr.), Media (He.) 

 (Sa.), barrens of Middletown (B. Sm.). Chester— Near Oxford, Porter 

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

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

 places. Spring. 

 Delaware— Mineral Hill (He.), Cheyney (Ws.). Chester— (P.). Lan- 

 caster— "New Texas (Ca.). 



9. HOLOSTEUM L. 

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

 Lancaster-*- Lancaster, A. A. Heller (B. C), Conestoga (Li.). Dauphin 

 —Black Horse, Middletown (S. Tr.). 



