34 WILLIAMS: PANAMA MOSSES 
HyopHiLA OERSTEDIANA C.M. Howe, Taboga Island, on 
rock, Dec. 1909. This determination is from description by C. 
‘Mueller in Syn. Musc. 2: 622. The type specimens were from 
Nicaragua. 
MACROMITRIUM APICULATUM Hook. Howe, Gatun and Ahorca 
Lagarto, Jan. 1910. 
MACROMITRIUM MUCRONIFOLIUM Hook. & Grev. Walliams 
1066, on trees near Penonomé at 600 m., March, 1908. 
Macromitrium flavopilosum sp. nov. 
Pseudoautoicous: in rather loose mats with bare or more or 
less tomentose creeping stems and rather distant, short, robust, 
often divided branches up to 2 cm. high, with crowded, spreading- 
flexuous, slightly undulate leaves; upper leaves 8 to 9 mm. long, 
narrowly lanceolate, smooth on both sides, serrulate on margin 
in upper half, gradually tapering into a yellowish, nearly straight, 
smooth hair point, slightly denticulate at apex and from one 
third to two thirds as long as blade; leaf cells narrow and elongate 
throughout with thickened walls, in rather straight rows, without 
furrows between from base to above the middle, in upper leaf 
scarcely in rows; perichaetial leaves scarcely differing from stem 
leaves: seta smooth, about 1 cm. high; capsule scarcely 2 mm. 
long, smooth, oval; lid convex, with slender, straight beak two 
thirds the length of capsule; peristome double, papillose, reddish 
brown, the outer a low cylinder with irregular margin, the inner 
a little higher than the outer with margin more deeply incised ; 
calyptra without hairs, lacerate below, somewhat rough at apex; 
spores rough, up to 30 in diameter. 
TYPE LOCALITY: Cana, Prov. Darien, Panama. Walliams 1063. 
A species much like M. ulophyllum in habit but leaves less 
undulate above, without a distinct border and median cells not 
in oblique rows. 
PHILONOTIS SPHAERICARPA (Sw.) Brid. Howe, Culebra and 
Taboga Island, Dec. 1909. This is P. nanodendra C. M. 
BRYUM CORONATUM Schwaegr. Howe, Culebra and Taboga 
Island; and Williams, Penonomé, in cultivated fields. 
RHIZOGONIUM SPINIFORME (L.) Bruch. Williams 1047, Cana, 
at 1200 to 1800 m. 
PSEUDOCRYPHAEA FLAGELLIFERA (Brid.) E.G. Britton. Will- 
dams 1070, Cana. 
LEUCODONIOPSIS PLICATA Ren. & Card. Williams 1068, Cana 
at 650 m. 
