438 Caryophyllaceae Cerastium 



3. Stellaria pubera Michx. {Alsine pubera (Michx.) Britt.) GREAT 

 Chick weed. Map 897. Infrequent to frequent in the southern counties, 

 becoming very rare in the northern part of its range in the state. Since 

 this species is confused with Stellaria media, I am referring the report 

 from Steuben County to that species. It is, no doubt, found slightly farther 

 north than our map indicates but there are no reports from Michigan or 

 northern Ohio. It prefers a deep leaf mold and is found in moist soil on 

 wooded slopes and in the bottoms of ravines. It is strictly a woodland 

 species. 



N. J., Pa. to Ind., southw. to Ga. and Ala. 



3a. Stellaria pubera var. silvatica (Beguinot) Weatherby. (Rhodora 

 26: 169-171. 1924.) (Alsine tennesseensis (C. Mohr) Small.) Map 898. 

 Local in a few counties along the Ohio River. Found in habitats similar 

 to those of the species. 



Southern Ind. to s. Tenn. 



4. Stellaria media (L.) Cyril. (Alsine media L.) Common Chick- 

 weed. Map 899. Found throughout the state and reported from many 

 counties. It is an annoying weed in lawns and in all kinds of cultivated 

 ground, especially about habitations. My specimens, however, with a few 

 exceptions, are from the woodland where it sometimes appears as native. 

 It is occasional to frequent in woodland, especially in the alluvial bottoms. 

 The species is extremely variable and our specimens might be assigned 

 varietal names as is done by some authors, but I doubt whether they are 

 of taxonomic value. It is to be expected that a cosmopolitan species with 

 widely varying habitats would show conspicuous variations. 



Nat. of Eurasia ; throughout N. A. 



2430. CERASTIUM L. Mouse-ear Chickweed 



[Fernald & Wiegand. Studies of some boreal American Cerastiums of 

 the section Orthodon. Rhodora 22: 169-179. 1920.] 



Bracts of the cymes with broad scarious margins and tips, rarely the lower ones wholly 

 herbaceous; perennials. 

 Petals as long as the sepals; anthers about 0.5 mm long; styles mostly 1-1.5 mm 

 long; capsules mostly 6-10 mm long and usually slightly more than 2 mm wide, 

 the teeth usually slightly more than 1 mm long. 



Inflorescence hirsute with glandless hairs 1. C. vulgatum var. hirsutum. 



Inflorescence with gland-tipped hairs 



la. C. vulgatum var. hirsutum f . glaiuiidosum. 



Petals about twice as long as the sepals; anthers 0.7-1 mm long; styles 2-4 mm long. 

 Plants with the upper internode and inflorescence with gland-tipped hairs, rarely 

 a few gland-tipped hairs below the first internode; stems generally 2.5-6 dm 

 long; median leaves lanceolate, or oblong-lanceolate, mostly 5-10 mm wide, 

 2.5-5 cm long; sepals 5-7 mm long; anthers mostly 1 mm long; styles about 

 4 mm long; capsules mostly about 13 mm long, the teeth about 1.5 mm long; 



seed about 1 mm long 2. C. arvense. 



Plants hirsute without gland-tipped hairs, mostly 12-20 cm high; leaves all linear, 

 rarely a few linear-lanceolate; sepals mostly 4-6 mm long; anthers about 0.7 

 mm long; styles about 2 mm long; capsules mostly 8-9 mm long; seed about 

 0.8 mm long 2a. C. undetermined. 



