82 Illinois State Lalxiratoi-ij of \<itinytl Jli.stori/. 



XV. TRIOHOOOLEA Dumort. 



Sporogonium in a fork. Inner involucre wanting. Invo- 

 lucral leaves numerous coalescent into an oblong, truncate, 

 coriaceous, hairy tube, concrete with the calyptra. Capsule 

 oblong. Elaters free, bispiral. Antheridia on the upper side 

 of the stem in the axils of leaves. Leaves palmately divided, 

 the divisions laciniate. Amphigastria usually many-cleft. 

 Name from Gr. trichos, hair, and koleos^ sheath, from the form 

 of the inner involucre. Dumortier in his later works reduces 

 the name to Tricolea. 



1. T. tomentella Dumort. Stems forked, 2-3-pinnately 

 branched ; leaves 4-5-divided, the divisions capillary, raany-clef t ; 

 amphigastria setaceously many-cleft. (Jumjermania tomen- 

 tella Ehrh., Tricolea tomentella Dumort.) 



Hah. — Among mosses in swamps and along rivulets; common. 

 (Eu.) 



Bib.—Qyn. Hep. p. 237; Hep. Europ. p. 111. 



Delin.—Bni. Jung. t. 36 ; Ekart. t. VI, f. 49 ; Sulliv. Mosses U. S. 

 t. VIII. 



Exsic. — Hep. Bor.-Amer. No. 81. 



2. T. Biddlecomise Aust. Stems tender, closely creep- 

 ing, simply and rather distantly pinnate; leaves transverse, 

 split almost to the base into capillary divisions, as are also the 

 amphigastria. 



Hah.— On rotten logs in swamps, Uibana, O. {Miss Biddlccome), 

 Bih.—Bot Gazette, III, 6. 



XVI. BAZZANIA B. Gr. 



Sporogonium on a branch ascending from the axil of the 

 amphigastria. Inner involucre elongate, trigonal, obtusely tri- 

 lobed, frequently more deeply fissured on one side^ membranous. 

 Involucral leaves small, narrow, subsquarrose, acutely incised 

 at the apex. Calyptra membranous^ included. Capsule glo- 

 bose, quadrivalved to the very base. Elaters bispiral. Anther- 

 idia spike-shaped, growing from the axils of the amphigastria. 

 Leaves imbricate, oblique, decurved, the apex mostly tridentate 

 rarely bifid or subentire. Amphigastria rather broad, mostly 

 3-4-toothed or crenate or some incised, serrate or entire. (Mas- 

 tic; jrr.Y"M Nees, Pleuroschisma Dumort.) 



