Part 1, 19091 CVATHEACEAER 71 
or in young or rapidly growing plants the fronds strictly ascending, the stipes long-adnate, 
leaving a few distant elongate-elliptic scars up to 15-18 cm. long and about 4 cm. broad, or 
both types of scars evident in zones in the same individual; summit of the caudex, the 
spaces among the upper scars, and the bases of the stipes closely covered with lanceolate 
attenuate dirty-white scales up to 4 cm. long; fronds 2.5-4 meters long, the stipe very 
stout, low-tuberculate, yellowish-olivaceous, lighter above, succulent; lamina 2-3 meters 
long, tripinnate, the primary and secondary rachises more or less muricate, dull-yellowish, 
minutely furfuraceo-puberulous, quickly glabrescent, devoid of scales, the leaf-tissue light- 
green, delicately chartaceo-membranous, minutely papillate; pinnae mostly alternate, 
spreading, 40-80 cm. long, 16-35 cm. broad, oblong, abruptly acuminate, petiolate (1-3 cm.) 
or the basal ones exactly ovate and long-petiolate (up to 7 cm.); pinnules of the middle 
pinnae 20-26 pairs, all but the lower ones sessile (in the lower and basal pinnae these long- 
petiolate, up to 1.5 cm.), subimbricate, contiguous, or mostly approximate, spreading (or 
the lower ones somewhat retrorse), 8-18 cm. long, 1.5-3.5 cm. broad, lanceolate, oblong- 
lanceolate, or elliptic-lanceolate, usually broadest near the middle, the apex gradually long- 
attenuate and serrate, the costa finely furfuraceo-puberulous below but quickly glabrous, 
above scantily long-pilose ; segments 20-32 pairs, linear-oblong (or if partially fertile often 
narrowly oblong-spatulate), subfalcate, dilatate, sharply and often deeply serrate, if very 
fertile the margin usually revolute, each tooth embracing a sorus ; costules glabrous above, 
or with 1-3 spinous hairs near the apex, below uniformly with 1 or 2 deciduous white bul- 
late scales at the base, elsewhere (together with the veins) very minutely glandular-setu- 
lose ; veins 10-13 pairs, if fertile mostly once-forked below the middle, if sterile often 2- 
or 3-forked ; sori numerous, 6-11 pairs ; indusia light- or yellowish-brown, shallow, saucer- 
like; receptacle capitate, exserted, squamulose-setiferous, sometimes cleft. 
TYPE LOCALITY: Le Morne de la Calebasse, Martinique. 
DISTRIBUTION: General in the Greater and Lesser Antilles ; rare in Mexico ; variously reported 
from northern South America and intervening territory. 
ILLUSTRATIONS: Plumier, Traité Foug. p/. 1,2; Hook. Sp. Fil. 1: £1.94 (as C. Serra). 
8. Cyathea concinna (Baker) Jenman, Bull. Dep. Agr. 
Jamaica 26: 4. 1891. 
Cyathea arborea concinna Baker ; Jenman, Jour. Bot. 19: 52. 1881. 
Caudex erect, very stout, post-like, 4-6 meters high, 15-20 cm. in diameter, of uniform 
thickness and rough-surfaced throughout, the fronds freely deciduous, frequently all falling 
together seasonally, leaving close deep pit-like broadly oval scars, these rough with project- 
ing fibrovascular bundles; stipe 2 cm. or less in diameter, 35 cm. or more long, light- or 
dark-brown, densely furfuraceous, darker at the base, with long (1.5-2.5 cm.) lanceolate 
bright-brown scariose-margined scales and relatively slender antrorse curved scattered dark- 
brown spines 9 mm. or less long, tuberculate above; lamina rather narrow, 2-3 meters 
long, 70-90 cm. broad, subcoriaceous, dark-green above, paler below, unequally tripinnatifid, 
the primary rachis pale-brown, pubescent and sparingly fibrillose above, below smoothish 
and lightly puberulo-furfuraceous, the secondary rachis similar, with a few deciduous 
lustrous brown lanceolate scales; pinnae numerous, alternate, close-set, sessile, linear to 
linear-lanceolate, 35-45 cm. long, 7-8 cm. broad, acuminate ; pinnules 35-45 pairs, approxi- 
mate or a little spaced, sessile, unequal in length (3-5 cm.) and width (4-9 mm.), lanceo- 
late or linear-lanceolate, irregularly cut one half to three fourths the distance to the costa 
into about 14-17 pairs of close unequal oblong or deltoid-oblong subacute segments below 
the short or acute serrate apex, or, in fertile specimens, the lower half (excluding the outer 
basal segment) lightly and irregularly lobate, the lobes mostly unisoriate, the margins fre- 
quently incurved and embracing the sorus, the pinnule thus appearing oblanceolate or 
linear-spatulate ; costa glabrous above or setose with a few appressed hairs, below pilose 
and paleaceous, the scales olivaceous or brownish, lanceolate or broader and somewhat 
bullate: costules similar below; veins few, mostly simple; sori basal upon the veins and 
segments ; indusia deeply cyathiform, membranous, very fragile; receptacle large, equaling, 
or with age extruding from, the indusium. 
TYPE LOCALITY: Below New Haven Gap (north), Jamaica. . . 
DISTRIBUTION: Not infrequent in the Blue Mountains of Jamaica at altitudes of from 1500 to 
2100 meters. 
