MAXON—STUDIES OF TROPICAL AMERICAN FERNS. 395 
Doctor Ekman adds: ‘‘Swartz surely had not this Old World plant in his mind when 
he made the description of Asp. articulatum. It agrees not with the words ‘frondibus 
ellipticis,’ nor could he say ‘stipitibus articulatis e stolone repente’ according to this 
specimen, because there are no subterranean parts at all on it, the specimen consisting 
only of two lamine with their short stipes. I am absolutely convinced that Swartz 
had the Plumier figure before him when he made his description; and this illustra- 
tion, thus, is the type of Asp. articulatum Swartz, 1801.’’ 
Under the circumstances it is manifestly proper to restore the name articulatum to 
the West Indian plant, as originally applied, and write nodosum as its synonym. 
The Mauritius plant wrongly called Oleandra articulata since Willdenow’s time is 
thus left without a name, unless it proves identical with Oleandra welwitschit Baker, 
described originally from Angola. 
4. Oleandra guatemalensis Maxon, sp. nov. 
Rhizome scandent, about 3 mm. thick, sparingly branched, densely appressed- 
paleaceous, the scales closely imbricate, lance-subulate from an oblong base, cas- 
taneous with lighter borders, slightly fimbriate; phyllopodia distant or subfasciculate, 
8 to 25 mm. long, slender, naked or with a few scales at the base; stipes 0.5 to 4 cm. 
long, olivaceous, glabrous; lamina 10 to 35 cm. long, 2 to 3 cm. broad, broadly linear, 
slightly falcate, usually tapering in both directions from near the middle, cuneate at 
the base, the apex long-acuminate, conspicuously caudate; costa strongly elevated, 
greenish to light olivaceous, glabrous, scantily but persistently paleaceous (at least in 
the lower half), the scales borne at the sides, yellowish brown, nearly or quite con- 
colorous, orbicular-cordate to cordate, acutish, glandular-denticulate; veins arising 
singly or in pairs, simple or once (rarely twice) forked, 14 to 18 per centimeter near 
the margin; sori about 1 mm. broad, usually few, forming an irregular series near the 
costa; indusia orbicular-reniform, perfectly entire, glabrous. Leaf tissue yellowish 
green, coriaceous (the margins cartilaginous and closely revolute), glabrous, or slightly 
glandular below. 
Type in the U. S. National Herbarium, no. 473315, collected from a tree trunk in 
forest along the trail from Senahd to Actalé, Alta Verapaz, Guatemala, January 17, 
1905, by William R. Maxon and Robert Hay (no. 3333). 
ADDITIONAL SPECIMENS EXAMINED: 
Guatemata: Trail from Esperanza to Purulhé, Maron & Hay 3361. Coban, 
Dept. Alta Verapaz, alt. 1,300 meters, von Tiirckheim (J. D. Smith, no. 983): 
Forest near Coban, Alta Verapaz, alt. 1,600 meters, epiphytic, von Ttirckheim 
II. 2110. 
Oleandra guatemalensis is nearest-related to O. lehmannii, from which it may be dis- 
tinguished by the key characters. The fronds are actually and relatively broader 
and less coriaceous than in that species and the plants are of very different appearance 
5. Oleandra lehmannii Maxon, sp. nov. 
Rhizome scandent, similar to that of O. guatemalensis, but the scales a little shorter, 
narrower, more rigid, dark castaneous, short-fibrillose; phyllopodia mostly distant, 
8 to 18 mm. long, slender, naked or scaly at the base; stipes 1 to 3.56 cm. long, light 
brown, slender; lamina 15 to 23 cm. long, 1.2 to 2 cm. broad, linear, straight or slightly 
falcate, gradually narrower in the basal third, narrowly cuneate, the apex rather 
abruptly long-acuminate, caudate; costa prominent, deciduously scaly at the sides in 
the lower half, the scales cordate-ovate to deltoid-ovate, glandular-denticulate, the 
lower ones more elongate; veins arising in 2’s or 3’s, simple or mostly once forked, 
20 to 28 per centimeter near the margin; sori about 1 mm. in diameter, numerous, a 
single complete row close to the costa, an incomplete irregular second row beyond; 
indusia orbicular-reniform, small, glabrous. Leaf tissue lustrous, yellowish green, 
very coriaceous, glabrous, the margins strongly cartilaginous and broadly revolute. 
