BROADHURST: STRUTHIOPTERIS IN NorTH AMERICA 363 
long, yellowish brown, flaccid, loosely appressed, accompanied 
by small linear or araneous ones; lamina 39 cm. long, 19 cm. wide, 
ovate-lanceolate, not reduced at the base (type A, without vestigial 
pinnae), gradually reduced at the apex, the scales smaller on the 
costae, the under surface finely araneous; pinnae 2I-jugate, 
narrowly lanceolate to linear-falcate, the apex acuminate, serrate, 
the base cordate, the lowest pinnae petioled; margins slightly 
and irregularly revolute and therefore appearing subentire; leaf 
tissue rigid-herbaceous; veins irregularly raised below, the vein 
spaces 10-12 toIcm. Sporophyl (not mature) 64 cm. long, includ- 
ing the stipe; stipe 26 cm. long, lighter in color, partly yellow-brown, 
otherwise as in the sterile; lamina 38 cm. long, abruptly or not 
at all reduced at the base, rather abruptly reduced at the apex; 
pinnae 21-jugate, 9-11 cm. long, 2-3 mm. wide, the base cordate 
(at least in the lower pinnae), occasionally with spurlike pro- 
tuberances ;* sporangia very dark brown; indusium delicate, nar- 
row, deciduous, subentire, irregularly and not fully lacerate. 
12. S. costaricensis (Christ) Broadh. comb. nov. 
Lomaria costaricensis Christ, Bull. Boiss. II. 4: 1092. 1904. 
Blechnum costaricensis C. Chr. Ind. Fil. 152. 1905. 
Plants terrestrial. Sterile fronds 60-80 cm. long; stipes at 
Sporophy] § indusium smooth, 2 mm. wide, edge entire but wavy, — 
brown-ochre. 
Type: In Christ’s herbarium. 
Distriution: Costa Rica and Guatemala. 
SPECIMENS INCLUDED: GUATEMALA: Alta Verapaz, Coban, 1350 
m., von Tiirckheim 1384, 1907 (Y). Alta Verapaz, “In paludosis 
Prope Coban,” altitude 4,300 ft., von Tiirckheim 3 53, 1879(N). 
*See footnote under S. vioiacea, p. 380 
t But with some whitish, appressed scales in the Guatemalan specimens. 
_ $Von Tiirckheim’s specimens from Guatemala are irregularly revolute; so is a 
pinna sent by Christ. Neith imen i te as in S. falciformis; nor so definitely 
Setrate as in any of the species so described in this paper. 
§ According to Christ. 
