Jennings: Manual of Mosses — 34. Brachytheciaceae 287 



On bark of tree^ and on fallen trunks in woods; in the eastern United 

 States from New England to North Carolina. 



Rare in our region. Elk Co.: McMinn. (Porter's Catalogue). 



2. Camptothecium Bryologia Europaea 



Dioicous and pseudautoicous: slender to robust, widely ccspitcse, mostly 

 yellowish-green, drying st'ift, mostly lustrous: stem elongate, procumbent to 

 ascending to erect, thickly-leaved, sometimes stoloniferous, more or less regu- 

 larly pinnate; leaves erect-spreading, sometimes weakly secund, non-decurrent, 

 slightly concave, strongly plicate, lance-oval, subulate-acuminate, serrulate all 

 around; costa simple, ending near or in the apex; median leaf-cells prosenchym.- 

 atous, 10-20:1, vermicular, thin, smooth, or with weakly projecting upper 

 angles, the basal lax, yellow, porose, the alar numerous, quadrate: perichaetium 

 not rooting, inner perichaetial leaves much elongate and abruptly subulate: 

 seta moderately long, castaneous, mostly rough, drying twisted; capsule cernu- 

 ous to horizontal, dorsally gibbous, oblong to oblong-cylindric, more or less 

 curved; annulus present; peristome-teeth basally confluent, linear-subulate, bor- 

 dered, dorsally cross-striate, thickly lamellate; inner peristome of same length, 

 free, the segments broad and carinately split, cilia strong and nodose; lid conic- 

 acute to thickly short-rostrate; calyptra glabrous. 



A genus of about 15 species, confined mainly to temperate regions on soil, 

 bark of trees in woods, or in swamps; a number of species occur in the West, 

 but in our region only the following: 



1. Camptothecium nitens [Schreber] Schimper 



(Hypnum nitens Schreber) 



A Striking species by reason of its bright yellow or golden color, silky 

 lustre, strongly plicate leaver, and stems densely covered by a felt of reddish 

 radicles: the stems often reach a length of 10 cm, strong; the elongate-lanceo- 

 late leaves entire, stronglv plicate, marginally revolute, gradually and evenly 

 narrowed to the slender apex, reaching usually over 3 mm long; median leaf- 

 cells linear, the basal shorter with very thick and porose walls, the alar broader 

 and short-rectangular to sub-quadrate but rather few in number and not form- 

 ing a very distinct auricle: seta smooth; capsule cylindric, arcuate, contracted 

 below the mouth when dry and empty; peristome well developed; cilia long; 

 spores mature in spring. 



In wet meadows, bogs, and swamps; Europe, Asia, and from Arctic Amer- 

 ica to northern United States. Occurs in eastern Pennsylvania but not yet 

 reported in our region. 



3. Chamberl.ainia Grout 



Cespitose, mostly glossy green, variously branching; .stem-leaves ovate; 

 branch-leaves erect-spreading, imbricate when dry, lanceolate to ovate-lanceolate, 

 concave, more or less serrulate, costate to above middle; median leaf-cells 



