302 BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



often contracted below spore sac when dry. Bull Torr. Bot. Club 21: 200. 

 1894. Low swampy ground and in gardens, probably only in the South- 

 ern states. 



247. Physcomitrium turbinatum Floridaimm (R. & C.). Leaves 

 longer, long acuminate, coarsely serrate: capsule strongly dilated at 

 mouth, when empty cup shaped, varying. Bull. Torr. Bot. Club 21: 200. 

 1894. Florida. 



248. Physcomitrium megalocarpnm Kindb. The largest one of the 

 genus, plants often 3-4 cm. high, light yellow or brown when old : stems 

 short, simple : leaves spreading, flat and open when dry, not much twisted 

 or shriveled, lanceolate from a lax oblong base ; lower cells large, inflated 

 at the angles, marginal longer and narrower in two rows, yellow, entire or 

 serrulate ; costa ending in acute or acuminate apex : seta erect or twisted 

 and bent ; capsule large, globose pyriform, nearly as broad as long, 

 usually urceolate when dry, contracted at neck and below mouth when 

 dry ; lid conic, bluntly apiculate ; mouth small, not flaring, bordered by 

 a narrow orange-colored annulus with a second hyaline row and 8-12 rows 

 of denser but slightly elongated cells ; neck short, stomatose ; spores 

 rusty brown, spinose. Bull. Torr Bot. Club 21: 200. 1894. Pacific slope. 



249. Physcomitrinm Kellermani Britt. Autoicous, antheridia ter- 

 minal in basal buds : plants scattered or gregarious, dark brown when 

 mature, small, seldom more than 3-5 mm. high : stems simple, with basal 

 innovations : leaves few, rosulate, ovate acuminate ; costa excurrent into 

 subulate apex or ending below it ; margins coarsely serrate ; cells inflated, 

 basal lax, scarcely elongated : seta short, scarcely exceeding perichaetial 

 leaves, occasionally long and exserted ; capsule short pyriform or broadly 

 flaring, bright brown when old; neck short, tapering or swollen into an 

 hypophysis, stomatose, rugose ; mouth bordered with 4-7 rows of cells 

 and a narrow, persistent annulus of darker cells with a hyaline incurved 

 row almost invisible ; lid small, conic rostrate ; calyptra large, three 

 lobed ; spores large, rough, warty, but not spinose. Bull. Torr. Bot. Club 

 21: 204. 1894. Kansas; Nebraska. 



250. Physcomitrium Coloradense Britt. Autoicous, antheridia in 

 basal buds, few, large, without paraphyses; plants small, 3-4 mm. high, 

 scattered or gregarious; stems short, simple or with basal buds; leaves 

 few, radical, erect, concave, base short, auriculate; cells lax, upper cells 

 shorter, marginal serrate or inflated above middle, with large irregular 

 teeth, occasionally entire or serrulate only at apex; vein narrow, percur- 

 rent into a cuspidate apex or ending below it in lower leaves: seta short, 

 immersed or partly exserted; capsule exserted, large for size of plants, 

 nearly 2 mm. long, pyriform when fresh, becoming turbinate and con- 

 tracted below mouth and spore sac when dry, bright orange or brown when 

 mature; mouth bordered by 4-5 rows of narrow, elongated cells, and a 



