146 NORTH AMERICAN FLORA [Vorumx 15 
( 27. Campylopus porphyreodictyog (C. Mill.) Mitt. Jour. Linn. 
Soc. 12: 75. 1869. 
Dicranum porphyreodictyon ©. Mill. Syn. 1: 395. 1848. 
Campylopus tenuissimus Sull. Proc. Am. Acad. 5: 279. 1861. 
Plants loosely cespitose; stems yellowish, ascending, sparsely tomentose, of two forms; 
fertile stems low, proliferous, the proliferations short, obliquely placed, below nearly bare, at 
the apex sparsely or falcately comose; sterile stems simple, elongate, caudate, curved, strongly 
appressed-foliate, somewhat terete: stem-leaves of fertile plants from a very short, rather 
broad base, lanceolate-subulate, with a rather broad strongly furrowed costa; lower leaf-cells 
elongate, the upper ones dense, green, minutely elliptic, the alar cells showy, purple; leaf-apex 
denticulate on the margin and back; perichaetial leaves loosely clasping, rather abruptly 
subulate, laxly areolate, at the base with numerous purple cells often solitary; costa purplish 
below; leaves of sterile plants broader, shorter, more acute, with inflated, purple alar cells: 
seta rather short, twisted, slender: capsule obovate, somewhat nodding, slightly strumose, 
sulcate, olivaceous; lid red, obliquely subulate; peristome-teeth divided to the middle, the 
forks hyaline and somewhat rough: calyptra fringed with a few yellow, flexuous hairs, (Trans- 
lated from the original description.) 
TYPE LocaLity: Colombia. 
DISTRIBUTION: Specimens referred to this species are from Cuba (Wright 40); Barbados (Parker, 
as C. filifolius); and Jamaica (Harris 11135, in part; Cinchona, E. G. Britton, without number) 
No type material of this species has been seen. If C. tenuissimus has been correctly reptéred 
to C. porphyreodictyos, the last differs chiefly from C. flifolius in having the upper part of the leaf 
much less serrate on the borders and back. 
28. Campylopus arctocarpus (Hornsch.) Mitt. Jour. Linn. 
Soc. 12: 87. 1869. 
Dicranum arctocarpum Hornsch. in Mart. Fl. Bras. 12:12. 1840. 
Thysanomitrium scabrisetum Hampe, Ic. Muse. pi. 23. B. 1844. 
Dicranum stenopus C. Mill. Syn. 1: 404. 1848, 
Plants in rather compact green tufts; stems branching, up to 10 cm. high, radiculose to 
near the apex, rather equally foliose or with the leaves comose at intervals: leaves rather 
crowded, erect-spreading, somewhat curved or flexuous, often secund toward the apex of the 
stem, 6-8 mm. long, from an oblong-lanceolate base, gradually narrowed to a short, stout, 
denticulate point, the leaf-blade 3 or 4 cells wide a little below its termination and serrulate 
about one fourth down; costa shortly excurrent, ribbed and serrulate on the back above, 
about 175 » wide just above the base, in cross-section showing a median row of large cells with 
stereid-bands above and below, the lower band with one row of larger cells near the dorsal 
surface; alar cells more or less conspicuous, from red to hyaline, the cells next above mostly 
rhomboidal to rectangular with pitted walls except near the margin, higher up becoming shorter, 
oblong to rhomboidal, in distinct rows with not pitted walls; perichaetial leaves shorter than 
the stem-leaves, convolute about one half up and rather abruptly narrowed to a serrulate point: 
seta 7 mm. long, somewhat rough above, slightly curved when moist, nearly straight when dry: 
capsule oblong, 1.5 mm. long without the lid, not quite regular, furrowed when dry, rugulose 
at the base; peristome-teeth 50 » wide at the base; lid conic-rostrate, as long as the capsule: 
calyptra ciliate at the base: spores rough, 12 » in diameter. 
Typ tocatity: Montevideo, Uruguay. 
DistRiBuTtIoNn: Near Cinchona, Jamaica; also in South America. 
ILLUSTRATION: Hampe, Ic. Muse. pl. 23. B. 
i 29. Campylopus cubensis Sull. Proc. Am. Acad. 5: 278. 1861. 
Plants in rather loose, green tufts; stems up to 6 cm. high, more or less branched, tomentose 
to the apex, rather uniformly leafy or somewhat comose: stem-leaves flexuous, spreading, 6-9 
mm. long, lanceolate, the apex stout, formed by the shortly excurrent, dentate costa with the 
leaf-blade om either side 4-6 cells wide a little below its termination and serrulate nearly one 
half down; costa 225-275 « wide below, about one third the width of the lower part of the leaf, 
smooth on the back below, ribbed and serrulate above, in cross-section showing a median row 
