Parr 1, 1909] CYATHEACEAE 85 
cately membranous, bursting irregularly, evanescent, or the inferior portion subpersistent 
as a shallow scale; receptacle small, slightly elevated, hirsute. 
TYPE LOCALITY: Summit between Tactic and Coban, Alta Verapaz, Guatemala, altitude 2000 
meters. ‘ 
DISTRIBUTION : Known only from the original collection (von Tiirckheim II. 1629). 
37. Cyathea Jurgensenii Fourn. Mex. Pl. Crypt. 135. 1872. 
Caudex and stipe undescribed ; primary rachis pale, sulcate, finely muricate, appressed - 
pubescent above ; pinnae petiolate (up to 2 cm.), rigidly membrano-herbaceous, dark- 
green above, bright clear green below, oblong-lanceolate, 55 cm. or more long, 12-19 cm. 
broad, abruptly acuminate, the apical portion deeply and obliquely serrate, the secondary 
rachis stramineous, smooth or delicately muricate below, glabrescent, a few minute brownish 
squamules adhering to the sides, above rusty strigose; pinnules articulate and readily sepa- 
rable, petiolate (the lowermost 3 mm.), 20-25 pairs, lanceolate, 7-10 cm. long, 1.5-2 cm. 
broad, very deeply pinnatifid, acuminate, the costa rusty-pilose above, below castaneous 
and glabrous or with an occasional small yellowish-brown scale; segments 18-20 pairs, close, 
ovate-oblong, falcate, acute, glabrous throughout upon both surfaces, or with a few decidu- 
ous linear scales upon the costule below, the margins obscurely crenate-serrate; veins dark, 
about 9 pairs, simple or mostly once-forked about half way to the margin, glabrous; sori 
4-8 pairs, borne at the forking of the veins, distinctly apart from the costule; indusium 
globose, membranous, pale-yellowish, bursting irregularly, the flat lobate basal portion per- 
sistent, calyciform ; receptacle yellowish, small, slightly elevated, hirtous. 
TYPE LOCALITY: Cordillera of Oaxaca, Mexico. 
DISTRIBUTION: States of Oaxaca and Vera Cruz. 
38. Cyathea aureonitens Christ, Bull. Herb. Boiss. II. 4: 948. 1904. 
Caudex erect, 3-4 meters high, about 15 cm. in diameter, the upper portion very 
densely clothed with bright-brown crispate divergent capillary scales, with numerous pro- 
truding sharp blackish spines 13 mm. or less long; fronds 6-8, all falling together season- 
ally, borne in definite successive zones 20-30 cm. apart, those of the season in a close crown 
about 15 cm. below the protruding included chaffy apex; stipe stout, 75 cm. or more long, 
very densely clothed and armed like the upper trunk ; lamina 2.5 meters or more long, 
ovate, passing abruptly into a subacute apex ; rachises smoothish or slightly muricate, rich 
yellowish-brown or with age castaneous, deciduously rusty-furfuraceous ; pinnae alternate, 
broadly lanceolate, 75-85 cm. long, 25-30 cm. broad, sessile, acuminate, the leaf-tissue 
rigidly coriaceous, dull dark-green above, below yellowish-green and glaucescent ; pinnules 
deciduous, 35-40 pairs below the deeply serrate apex, sessile, 14-16 cm. long, 2.3-2.8 cm. 
broad, lanceolate to deltoid-lanceolate, long-attenuate, spreading at right angles or the lower 
ones a little deflexed, contiguous or overlapping at the base, incised nearly to the costa, the 
costa yellowish-brown, with a conspicuous tuft of fuscous filamentous scales at the base, 
elsewhere sparingly covered with small firm blackish or dark-brown contracted stellate 
scales, these extending to the costules, veins and along the margins ; segments about 30 pairs 
below the crenate-caudate apex, 12-13 mm. long, about 4 mm. broad, approximate, con- 
nected by a narrow wing about 1 mm. wide, strongly falcate, obtuse or subacute, rigid, the 
margins subentire, usually reflexed ; veins about 16 pairs, once-forked near the base ; sori 
large, 7-9 pairs, close to the costule, covering nearly two thirds of the segment ; indusium 
brownish, firm, opaque, rupturing into a few irregular saccate divisions, these persistent ; 
receptacle large, brownish, elevated. 
‘T’vpp LOCALITY: Costa Rica. . ; : . ; 
DISTRIBUTION : Confined to Costa Rica; not uncommon in humid forest ravines, mainly of 
the central mountain region, at from 1000 to 2000 meters elevation. 
39. Cyathea punctifera Christ, in Pittier, Prim. Fl. 
Costar. 3: 40. 1901. 
Caudex erect, 7 meters high, 30 cm. in diameter, densely covered with brown adven- 
tive roots ; stipe stout,'’3 cm. in diameter at the base, bearing scattered slender purplish- 
