CERASTIUM. 53 
erect longer than the calyx, fruitstalks longer than the calyx at 
Jirst reflexed afterwards erect —E. B. 1630. R. v.228.—St. erect 
or decumbent, downy, sometimes viscid. Distinguished by its 
half membranous bracts—Common in dry places. A. IV. V. 
A. C. pumilum (Curt.) ; 1. ovate or oblong, sep. lanceolate acute 
with the apex and margins narrowly membranous, bracts herba- 
ceous with an extremely narrow membranous margin, caps. slightly 
curved upwards longer than the calyx, fruitstalks short curved at 
the top declining from their base ultimately erect.—Curt. Lond. 
i. 92.—Viscid. St. branched at the root, afterwards nearly 
simple, prostrate, or ascending. Fi. in small terminal dichoto- 
mous corymbs. The curve at the top of the fruitstalks is rather 
doubtful as my authentic specimens and the figure do not clearly 
show its presence or absence. It is probable that this, the C. 
glutinosum (Fr.), and C. obscurum (Chaub.) are the same species 
which is frequent on the continent but apparently very rare in 
England. I know but little of the English plant.—Near Croy- 
don, Surrey. Mr. Dickson! A. V.? E. 
5. C. tetrandrum (Curt.); 1. oval or oblong, sep. lanceolate 
acute their apices and margins narrowly membranous, bracts her- 
baceous, caps. a little exceeding the cal. straight, fruitstalks 2—4 
times as long as the caps. straight ultimately erect.—E. B. 166. 
Curt. Lond. 1.93. C. pumilum Gren. C. atrovirens and C. tetran- 
drum Bab.—Viscid. St. repeatedly forked from the very base 
with a fl. in each fork. Bracts very broad, oval, rather acute or 
apiculate, or nearly round, leaflike. An authentic specimen has 
shown that my C. atrovirens is the original C. tetrandrum of 
Smith and Curtis, that supposed species must therefore drop. 
Latterly Smith included forms of C. semidecandrum under that 
name. My C. tetrandrum is probably the young state. Walls 
and sandy places near the sea. A. V.—VII. 
** Root truly perennial, with prostrate leafy shoots. Pet. 
longer than the calyax. 
6. C. arvense (L.); st. ascending prostrate below, J. linear- 
lanceolate, fl. numerous, sep. and bracts lanceolate slightly acute 
with membranous margins and apices, caps. at last longer than 
the calyx, seeds small acutely tubercled—E. B. 93.—St. long. 
Fl. 7—14, in dichotomous panicles. Fruitstalks erect, bent just 
under the calyx.—f. strictum ; st. and 1. glabrous.—In sandy and 
gravelly and chalky places. 8. Arran, Ireland. Mr. Andrews. 
P. IV.—VII. 
7. C. latifolium (L.); pubescence short, st. prostrate cespitose, 
1. elliptical or lanceolate, fl. 1—3, sep. blunt with membranous 
margins, bracts herbaceous, caps. slightly narrowing straight, 
seeds large rugose, fruitstalks obliquely patent.—E. B. 473.— 
