June, 1913.] Caryophyllaceae of Ohio. 179 



3. Alsine pubera (Mx.) Britt. Great Chickweed. Perennial; 

 stems and branches with two lines of hairs; 3 to 123^ inches high; 

 leaves oblong or ovate-oblong, their margins cjliate, the upper 

 generalh^ sessile, the lower sometimes narrowed into broad petioles; 

 flowers in terminal cymes with lanceolate sepals and 2-cleft petals. 

 Medina, Preble, Clermont, Fairfield, Pike, Lawrence, Gallia, 

 Vinton. 



4. Alsine longifolia (Muhl.) Britt. Long-leaf Stitchwort. 

 Glabrous, ascending; stem rough angled; leaves linear, spreading, 

 acute; flowers numerous, arranged in tenninal or lateral cymes. 

 General in northern Ohio; also in Highland, Jackson and Gallia 

 Counties. 



5. Alsine graminea (L.) Britt. Lesser Stitchwort. Weak, 

 glabrous, ascending from creeping rootstocks; 6 to 12 inches high; 

 stem 4-angled; leaves lanceolate, sessile; flowers arranged in 

 loosely spreading cymes; bracts lanceolate sometimes scarious- 

 or ciliate; sepals equalling the 2-cleft petals. Cuyahoga, Auglaize, 

 Belmont. 



Cerastium L. 



Pubescent or hirsute herbs. Flowers white, arranged in 



terminal cymes; petals 5, rarely 4, emarginate or bifid, (rarely 



wanting); sepals 4 or 5; stamens 10, rarely fewer; styles 4 or 5 



or fewer, arranged opposite the sepals. 



1. Leaves linear or lanceolate, 8 to 10 times as long as broad; petals longer 

 than the sepals. 2. 



1. Leaves ovate-lanceolate, about 4 times as long as wide, petals 3, equal- 



ling or shorter than the sepals. C. vulgatum. 



2. Stem erect; pubescent, densely tufted; perennial; styles 5. C. arvense. 

 2. Stem weak, reclining or ascending, clammy-pubescent to glabrate^ 



annual. C. longi pediinculatum . 



1. Cerastium vulgatum L. Common Mouse-ear Chickweed. 

 Biennial or perennial, viscid-pubescent, 7 to 14 inches high. Lower 

 and basal leaves spatulate-oblong; upper leaves oblong, 3^ to ^ 

 inch long; flowers loosely arranged on long pedicels. General. 



2. Cerastium longipedunculatum Muhl. Nodding Chick- 

 weed. Annual, reclining or ascending, 6 to 16 inches high; 

 clammy-ptibescent to glabrate. Lower leaves spatulate, obtuse, 

 petioled, 1 to 1^ inches long; flowers loosely arranged, pedicels 

 very long in fruit; petals when present about twice as long as the 

 sepals. General in southern Ohio, also in Ottawa and Cuya- 

 hoga Counties. 



3. Cerastium arvense L. Field Chickweed. Perennial, downy 

 or nearly smooth, 6 to 12 inches high. Basal leaves and those on 

 the sterile shoots linear-oblong; stem leaves distant, linear or 

 narrowly lanceolate; petals obcordate, longer than the lanceolate 

 acute sepals. Sandusky, Ottawa, Trumbull, Miami, Monroe. 



4. Cerastium arvense oblongifolium (Torrj Holl. and Britt. 

 Pubescent; leaves oblong or lanceolate; capsule about twice the 

 length of the calyx. Erie, Monroe. 



