300 American Midland Naturalist Monograph No. 6 



2. Cirriphyllum Bosch (Schwaegrichen) Grout 

 {Hypnum Boscii Schwaegrichen; Eurynchium Boscii Jaeger). 



Spoon-Leaved Moss 



Plate LVII 



Loosely cespitose in large, golden-green mats, the older portions blackish, 

 robust: stems up to 8-10 cm long, prostrate, somewhat pinnately branching, 

 the branches mostly simple, erect, turgid-terete; leaves closely to loosely imbri- 

 cate, large, about L5-2.5 mm long, spoon-shap>ed, abruptly acuminate, the 

 acumination filiform and twisted, the leaves oblong-ovate, scarious, shining; 

 costa double and short, or simple and reaching to the leaf-middle or beyond; 

 meadian leaf-cells narrowly linear-rhomboid, the marginal shorter and mainly 

 rhomboid, the basal short, wide, yellowish-brown, pellucid, irregularly oblong 

 to rectangular, larger but shorter, the alar incrassate, quadrate, forming an 

 indistinct group, the apical shorter and wider than the median, the median 

 about 6-10:1; perichaetial leaves narrowly long-acuminate, the inner erect: 

 seta smooth; capsule oblong, about 2.5-3:1, the urn about 2 mm. long, inclined, 

 sub-arcuate; lid sharply obliquely rostrate, about 1 mm long; annulus 2-seriate; 

 peristome normally hypnoid with somewhat split segments and cilia 3, about 

 as long as segments, nodose; spores mature in fall, about .016 mm. 



On earth or rocks in moist woods, often at the edges of the woods, or even 



in the fields; from New England to Florida and westward to Missouri. 



Probably fairly common in our region. Cambria Co.: (Porter's Catalogue), Hun- 

 tingdon Co.: Pennsylvania Furnace, July 13, 1909. Washington Co.: Linn and 

 Simonton. (Porter's Catalogue). Westmoreland Co.: Hillside, May 22, 1909. O.E.J. 

 (figured ) . 



6. Oxyrhynchium (Bryologia Europaea) Wamstorf 



Mostly dioicous: slender to robust, laxly to densely cespitose, dark to yel- 

 lowish-green, drying soft or stiff, dull to lustrous: stem creeping or ascending, 

 often stolon-like, often bearing rhizoids, irregularly pinnate to fasciculately 

 branched; branches mostly complanately-leaved, stem-leaves and branch-leaves 

 sometimes different, sometimes similar except in size, non-plicate, little or not 

 concave; stem-leaves erect-spreading to squarrose, from a somewhat narrowed 

 and sometimes decurrent base ovate to triangular oval, with short and broad or 

 somewhat longer apex, plane-margined, somewhat serrate; costa simple, ending 

 at or above the leaf-m.iddle, often ending in a dorsal spine; median leaf-cells 

 narrowly prosenchymatous, smooth, the basal shorter, mostly incrassate and 

 porose, the alar differentiated: seta elongated, mostly red, quite thick, mostly 

 rough; capsule cemuous to horizontal, sometimes sub-erect, thickly oval to 

 oblong-ovate, dorsally gibbous; annulus present; peristome as in Brachythe- 

 cium; lid long and obliquely subulate-rostrate; calyptra glabrous. 



A genus of about 20 sp)ecies, on damp and shaded rocks, stones, or some- 

 times in water, mostly in temperate regions; 2 species in our region. 



Key to the Species 



A. Aquatic: alar leaf-cells forming a slightly differentiated group: seta smooth 



1. O. riparioides 



A. Terrestrial : alar-cells not differentiated: seta roughly papillose 2. O. hians 



