Part 1, 1909] CYATHEACEAE 79 
ceous, glabrescent, flexuous toward the apex; secondary rachises similar, yellowish, rusty- 
tomentose above, finely scabrous below; pinnae alternate, sessile, approximate or slightly 
overlapping, 45-75 cm. long, 15-20 cm. broad, oblong-lanceolate, decurved in the outer part, 
the apex abruptly acuminate; pinnules 25-28 pairs, close, patent or the lower ones de- 
curved, sessile, linear-lanceolate, 7.5-10 cm. long, 1.3-1.8 cm. broad, a little enlarged at 
the base, incised to the costa nearly throughout, the apex commonly attenuate or sub- 
caudate, crenate-serrate; costae and costules with numerous laciniate cinnamomeous scales; 
segments 17-20 pairs, 7-9 mm. long, 3-4 mm. broad, oblong, oblique, close, falcate, entire 
or the lowermost crenately incised, these enlarged and overlapping the rachis, deeply 
excised at the inner base; veins 7-10 pairs, mostly once-forked, nearly glabrous; sori 4-8 
pairs, medial or inframedial, nearly covering the segment, seated at or, below the forking 
of the veins; indusia subglobose, papyraceous, whitish, conspicuous, at first completely 
enveloping the sporangia, at maturity opening outward and readily breaking up into several 
irregular subpersistent segments; receptacle short, inconspicuous. 
TYPE LOCALITY: La Guinea, eastern Cuba. 
DISTRIBUTION: Eastern Cuba and Jamaica. Apparently rare in Cuba; in Jamaica not uncom- 
mon at certain points in the Blue Mountains, at from 900 to 1800 meters elevation, growing in open 
or moist shaded situations. ‘ 
25. Cyathea caribaea Jenman, Ferns Brit. W. Ind. 57. 1898. 
Caudex erect, about 6 meters high; fronds spreading, very ample, sometimes more 
than 4 meters long; stipe stout, with large spines below; primary rachis stout, purplish, 
slightly furfuraceous; pinnae 60 cm. or morelong, 18-23 cm. broad, oblong, sessile, abruptly 
acuminate, very dark-green above, lighter and glaucous below, coriaceous, the secondary 
rachis stout, firm, purplish, polished, lightly and very minutely light brownish-furfuraceous ; 
pinnules very numerous, approximate, sessile, 8-12 cm. long, 1.3-2 cm. broad, deeply cut 
almost to the costa into about 22-28 pairs of segments below the subcaudate serrate apex ; 
segments elongate-oblong, falcate, close or the lower ones a little apart, 7-10 mm. long, 
about 2.5-3 mm. broad, slightly dilatate, the margins reflexed, subentire, or at the obtuse 
apex crenulate ; costae yellowish-brown, pilose on both surfaces, the lower also minutely 
stellate-squamose and with a few slender dark-brown striped deciduous scales, the costules 
pilose and similarly squamulose; veins 8-10 pairs, mostly once-forked close to the costule, 
casually simple or twice-forked; sori 2-4 pairs, basal on the veins and confined to the base 
of the segments; indusium globose, delicate, yellowish-brown, bursting irregularly, the 
large divisions scarcely persistent ; receptacle elevated, slightly capitate, setiferous. 
TYPE LOCALITY : St. Vincent. . 
DISTRIBUTION : Known definitely only from St. Vincent. 
26. Cyathea Brunei Christ, Bull. Herb. Boiss. II. 4: 497. 1904. 
Cyathea caesia Christ, Bull. Herb. Boiss. II. 7: 272. 1907. 
Caudex erect, 3-4 meters high, 30 cm. or more in diameter at the summit, there very 
densely paleaceous, without definite scars, the old fronds pendent and sheathing the cau- 
dex ; fronds 3.5-4 meters long, borne in a nearly erect crown; stipe 5 cm. in diameter at 
the base, dark purplish-brown below, sparsely tuberculate beneath a very dense covering 
of delicate flaccid yellowish-brown scales, these (paler with age) up to 6 cm. long and 3.5 
mm. broad, linear-lanceolate, very long-attenuate, widely spreading, underlaid by succes- 
sively smaller scales, the innermost greatly reduced, dark-brown, subulate, conspicuously 
spinescent-ciliate, subpersistent; lamina about 3 meters long, 1.7 meters broad, broadly 
ovate, abruptly acuminate, the primary rachis stout, dull-yellowish or brownish, glabres- 
cent, when young densely paleaceous, the scales small, dark-brown, closely entangled, long 
spinescent-ciliate, usually persistent in a long tuft at the base of the pinnae and extending 
throughout the stout yellowish secondary rachis, there deciduous or at the base of the pin- 
nules subpersistent; pinnae mostly alternate, the lowermost subopposite and somewhat 
reduced (40 cm. long), long-petiolate (6-9 cm.); characteristic pinnae 70-100 cm. long, 
20-30 cm. broad, petiolate (2-5 cm.), oblong-lanceolate from a broad base, acuminate, cau- 
date; pinnules about 40 pairs, 10-15 cm. long, 1.5-2.5 cm. broad, narrowly oblong- 
