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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 11 



2. Paraeromastigum pachyr[r]hizum (Nees) Fulford, comb. nov. 



Jungermannia pachyrhiza Nees in Martius, Fl. bras. 1: 339. 1833. 

 Blepharostoma pachyrhiza (Nees) Trevisan Mem. 1st. Lomb. III. 4: 417. 1877. 

 Cephalozia pachyrhiza (Nees) Stephani, Spec. Hep. 3: 311. 1908. 

 Cephalozia asperrima Stephani, Spec. Hep. 3: 309. 1908. [type not seen.] 

 Cephalozia ovalifolia Stephani, Spec. Hep. 3: 330. 1908. 

 Pseudocephalozia ovalifolia Schuster, Nova Hedwigia 10: 26. 1965. 



Plants small, delicate, whitish-green rarely becoming tinged with reddish-brown, 

 in loose mats or among other bryophytes; stems to 2 cm or more long, irregularly 

 branched, the lateral branchs leafy, of the Frullania type, and ventral branches both 

 of the Acromastigum type with the half-underleaf at one side, and axillary-inter- 

 calary, leafy or flagelliform, the latter very long and hyaline; in transverse section 

 the stem with the ventral cortical cells smaller than the others. Rhizoids in tufts 

 from the underleaves, and in 3 rows of tufts from flagelliform branches. Line of 

 leaf insertion oblique, the leaves succubous. Leaves widely spreading, plane or 

 concave, distant to subimbricate, ovate, bifid to one-half or less (sometimes trifid), 

 the cells subquadrate to longer than broad; cells of the base of the segment 26-39 X 

 18-26 ix, the walls uniformly thickened, the cuticle coarsely verruculose. Under- 

 leaves less than half as long as the leaves, variable, bifid (some trifid) to one-half. 

 Plants dioicous. Male inflorescence terminal becoming intercalary on the leafy stem, 

 the bracts and bracteoles similar to the leaves and underleaves, often smaller, the 

 bracts imbricate, concave, monandrous; antheridial stalk of 2 rows of cells. Female 

 inflorescence on a short leafy branch, the bracts and bracteoles in 3 or 4 series, 

 bifid, the margins of the innermost series sometimes with a short tooth on one of 

 both sides. Perianth rather short, cylindrical below, 3-keeled above, the lobes broad, 

 rounded, the 3-lobed mouth variously short laciniate-ciliate. 



PI. 107. Fig. 2, a-k. 



Habitat: On moist shaded banks with other bryophytes. 



BRAZIL: Villa Rica, Martius (type S-PA, BM) ; Minas Gerais, Wainio type of C. ovalifolia 

 (G-1321); the same [scraps] = type, Pseudocephalozia ovalifolia, Schuster annot. (BM) ; S. 

 Paulo: Jardim Botanico, Fulford, Hatcher, Hell & Vital 621 p.p., 626 ($), 661, 662 p.p., 665 

 p.p., 671 p.p. (Hb Fulford) ; prope Rio Grande, Schiffner 81, 428 (UPS) ; S. Paulo "Railway," 

 800 m, Schiffner (UPS) ; si, Burchell, Cat. Geogr. PI. Bras. trop. 3722, 3723 (NY). 



3. Paraeromastigum stipulatum (Herzog) Fulford, comb. nov. 



Cephalozia stipulata Herzog, Mem. Soc. Fauna Fl. Fennica 27: 105. /. 48, a-l. 1951 [1952]. 



Plants small, light yellowish-green tinged with reddish-brown, prostrate, among 

 lichens. Stems 0.5-1.0 cm long, irregularly branched, the lateral branches leafy, of 

 the Frullania type, the ventral branches of the Acromastigum type with the half- 

 underleaf at one side, or axillary-intercalary, leafy or long flagelliform; stem in 

 transverse section with the ventral cortical cells smaller than the dorsal cortical cells. 

 Rhizoids in tufts from the bases of the underleaves or in tufts in three rows on 

 flagelliform branches. Line of leaf insertion oblique. Leaves patent, subimbricate, 

 more or less concave, bifid to one-half their length, the segments narrowly triangular 

 from a base 4-6 cells wide, acute to shortly acuminate, the cells subquadrate to 

 longer than broad; cells of the base of the segment 30-39 X 26 fi, the walls uniformly 

 thickened, coarsely verruculose. Underleaves conspicuous, nearly half as long as the 

 leaves, bifid to one-half the length, the segments acute. Plants dioicous. Male in- 

 florescence terminal becoming intercalary on the stem, the bracts and bracteoles 

 in 6 or more series, similar to the leaves and underleaves, smaller, more compact, 

 the bracts concave. Female inflorescence on a short ventral branch or from a flagel- 



