Part 1, 1909] CYATHEACEAE 81 
the sinuses very narrow, the mafgins obliquely crenate; costae and costules bearing decid- 
uous shining castaneous bullate scales, with a few pale fibrils intermixed, these extending 
to the veins, the costules also with a few appressed deciduous hairs above; veins 5-9 pairs, 
simple or mostly once-forked, very oblique; sori 3-6 pairs, near the costule, occupying one 
half or more of the segment; indusia castaneous, membranous, globose, bursting irregu- 
larly into several spreading persistent calyciform segments; receptacle short, subglobose, 
setiferous. 
TYPE LOCALITY: Near Morces Gap, Jamaica, altitude 1500 meters. 
DISTRIBUTION: Confined to forests in the Blue Mountains of Jamaica, altitude 1500 to 1800 
meters. 
29. Cyathea furfuracea Baker, in Hook & Baker, Syn. 
Fil. ed. 2. 450. 1874. 
Caudex erect, slender, 1-4 (or rarely 12) meters high, 4-7 cm. in diameter, clothed at 
the summit with linear-lanceolate attenuate rusty-brown scales about 1.5 cm. long; fronds 
deciduous, usually spreading, the scars in 8-11 ranks, usually close-set and nearly circular, 
rough, about 1.5 cm. in diameter, or in younger or more rapidly growing specimens the 
fronds ascending, less readily deciduous, the scars somewhat apart and protuberant, oval to 
ovate, larger ; stipe 20-50 cm. long, densely clothed at the base with scales like those of 
the upper caudex, freely asperous with stout straight conical spines up to 3.5 mm. long, 
bright-brown or light-castaneous, deciduously furfuraceous; lamina deeply tripinnatifid, 1- 
1.5 meters long, narrowly obovate, short-acuminate, the primary rachis short-aculeate or 
toward the apex muricate, glabrescent, light-brown or yellowish; leaf-tissue delicately 
chartaceous or with age herbaceous, above dull-green, lighter and grayish-granulose below ; 
pinnae contiguous or imbricate, the basal ones mostly ovate and half the length of the 
middle ones, the latter mostly oblong, 20-40 cm. long, 7-14 cm. broad, sessile to short- 
petiolate, short-acuminate, the secondary rachises rusty-strigose above, below yellowish, 
scabrous, and bearing a few deciduous linear-lanceolate rusty-brown scales; pinnules 18- 
23 pairs, approximate or subimbricate, sessile, oblong to oblong-lanceolate, pinnatifid nearly 
to the costa (or at the base rarely pinnate), 3.5-7 cm. long, 9-20 mm. broad, the apex 
short-acuminate, serrate-crenate ; costae rusty-strigose above, below paleaceous, the scales 
like those of the secondary rachis or (in the outer part) ovate, long-attenuate, subbullate, 
with long whitish or grayish tortuous hairs intermixed ; segments 12-15 pairs, oblong to 
narrowly oblong, oblique, nearly straight, close, obtuse, the margins flattish or with age 
recurved, serrulate-crenate, the costules above bearing a few long stiffish hairs, below 
clothed like the costae; veins 6-8 (9) pairs, simple or once-forked at or below the middle, 
bearing numerous long whitish hairs below and a few above; sori 3-5 pairs, confluent at 
maturity; indusium globose, delicately membranous, nearly hyaline, bursting irregularly, 
the divisions largely disappearing ; receptacles dark-brown, relatively small, setiferous. 
TYPE LOCALITY: Jamaica. . ; . ; 
DISTRIBUTION: Common in the Blue Mountains of Jamaica, in forests and upon partially 
cleared slopes at from 1200 to 1800 meters altitude ; also known from the Gran Piedra, Oriente, 
Cuba, at about 1100 meters elevation, these specimens smaller than the Jamaican. 
30. Cyathea Harrisii Underwood, sp. nov. 
Caudex erect, 1-2 meters high, 6-8 cm. in diameter, clothed at the top with glossy 
linear-lanceolate pale-margined castaneous scales about 3 cm. long; fronds spreading, 1.5- 
2 meters long; stipes relatively slender, light- to dark-castaneous, 35-45 cm. long, bearing 
numerous short straight spines and clothed at the inner base and above with copious chaff 
like that of the caudex, above tuberculate; lamina 1.25-1.5 meters or more long, 70-85 
em. broad, deeply tripinnatifid, chartaceous, dark-green above, paler below, the apex short- 
acuminate; primary rachis light- or yellowish-castaneous, smooth below or slightly tuber- 
culate, scantily rusty-furfuraceous below, glabrescent, above more or less appressed rusty- 
pubescent; pinnae 40-50 cm. long, 15-19 cm. broad, oblong-lanceolate, short-petiolate, the 
apex acuminate, the secondary rachis subflexuous, densely appressed rusty-pubescent 
above, minutely pubescent or glabrate below; pinnules 20-25 pairs, short-petiolate, oblong- 
lanceolate, about 9 cm. long, 2 cm. broad, approximate or slightly spaced, at the base pin- 
