Part 1, 1909] CYATHEACEAE 75 
with stiff brownish appressed hairs; pinnules 30-35 pairs, lanceolate, sessile, cut to the costa 
at the base, above scarcely so, the apex abruptly acuminate, crenate ; costae yellow, glabrous 
above, below stramineous, muricate, with a few deciduous linear-lanceolate purplish-brown 
appressed scales ; segments very close, 18-20 pairs, 7-9 mm. long, oblong, slightly falcate, 
the lowermost pair sessile, those above adnate and connected in the apical half by a narrow 
wing, the margins subentire, faintly crenulate at the apex, revolute, or the entire segment 
deeply concave; costules glabrous above, below bearing a few yellowish~brown dark-tipped 
scales toward the base and lighter bullate ones toward the apex; veins about 9 pairs, con- 
cealed, mostly once-forked near the base; sori 1-3 pairs, at or near the base, close to the 
costule ; indusium light-brown, deeply hemispheric, slightly constricted, the margin entire, 
smooth and delicately whitish araneose-ciliate, glabrous with age ; receptacle stout, setiferous, 
short and included. 
Type collected on partially open southern upper slopes and summit of the Gran Piedra, Ori- 
ente, Cuba, altitude 900 to 1200 meters, April 14, 1907, Maxon 4035 (U. S. Nat. Herb. no. 522680). 
DISTRIBUTION: Known only from this collection. 
16. Cyathea Werckleana Christ, Bull. Herb. Boiss. 
II. 6: 181. 1906. 
Caudex undescribed ; fronds ample, irregularly quadripinnatifid; stipe stout, 2 cm. or 
more in diameter, light-castaneous, polished, armed with stout conical spines about 7 mm. 
in length, at the base thickly clothed with tortuous linear-subulate scales about 1 cm. long ; 
rachis castaneous, polished, delicately and minutely light puberulo-furfuraceous; pinnae 
subsessile to petiolate (2 cm.), oblong, acroscopic, up to 75 cm. long and 25 cm. broad, 
acuminate, terminating abruptly in a pinnate apex, the secondary rachis like the primary ; 
pinnules about 35 pairs, rigidly herbaceous to subcoriaceous, dull dark-green above, below 
paler and subglaucous, deciduous, sessile, contiguous or slightly imbricate, linear-oblong, 
acuminate, 11—-15cm. long, 2.5-3.1cm. broad (the superior ones longest), fully pinnate through- 
out, the costae minutely grayish puberulo-furfuraceous below, with a few greatly reduced 
substellate brownish scales ; segments deciduous, approximate or contiguous, wholly sessile, 
free, linear-oblong, 1.3-1.8 cm. long, 4-6 mm. broad, straight or in drying slightly falcate, 
subacute, subcordate at the base, above deeply and regularly serrate-lobate, the lobes (5-8 
pairs) semiovate, acute, 2 mm. long, the margins usually entire, revolute, the costules like 
the costae ; veins pinnately branched, 2-5 pairs to each lobe ; sori minute, 1-3 to each lobe, 
nearly basal; indusium delicately membranous, globose, rupturing readily, the fragments 
mostly disappearing ; receptacles dark, elevated, broadly capitate, grayish pilose-furfuraceous. 
TyPE LOCALITY : La Palma, Costa Rica, altitude about 1500 meters. 
DISTRIBUTION: Known only from the mountains of Costa Rica. 
17. Cyathea hemiotis Christ, Bull. Herb. Boiss. II. 6: 182. 1906. 
Caudex undescribed; fronds ample, tripinnate ; stipe stout, 2 cm. or more in diameter, 
castaneous, shining, armed with distant stout broadly conical spines about 5 mm. long and 
sparsely clothed with tortuous filiform brownish scales about 1 cm. long; rachis castaneous 
or dark-purplish, polished, subfurfuraceous ; pinnae subsessile to petiolate (upto 2cm.), up to 
75cm. long and 25 cm. broad, elongate deltoid-oblong, terminating very abruptly in an acu- 
minate pinnate apex, the secondary rachis polished, castaneous, minutely and lightly puber- 
ulo-furfuraceous ; pinnules about 25-30 pairs, close (or in sterile specimens subimbricate), 
sessile, elongate-oblong, acuminate, 11-13 cm. long, 2-2.75 cm. broad, the costa appressed 
ferruginous-pilose above, below minutely and deciduously grayish puberulo-furfuraceous, 
narrowly sinuate-alate nearly throughout ; segments numerous, 25-30 pairs, rigidly herba- 
ceous, dull dark-green above, paler and subglaucons below, approximate (closer in sterile 
specimens), rhomboid-oblong or narrowly so, subacute to acute, 1~-1.4 cm. long, 4-6 mm. 
broad, falcate or subfalcate, mostly sessile or above semiadnate, the bases of the larger 
ones subcordate to unequally subauriculate, the margins lightly or deeply crenate-serrate, 
sometimes unequally so, the fertile segments least incised, the costules glabrescent ; veins 
about 10 pairs, concealed, 1-3 times pinnately forked, glabrate; sori small, 3-5 pairs, close 
