Dr. E. Rosenstock: Filices costaricenses. 67 
35. Kochia Murrayana Ewart and Rees, 1. c., p. 16, pl. IX. (Cheno- 
podiaceae.) — Apparently a small shrub, stems and leaves covered with 
woolly hairs. Leaves alternate, sessile, linear, obtuse, flattened, half to 
one inch long, densely covered with woolly hairs. Flowers, solitary, 
axillary. Styles 2, persistent. Fruiting perianth convex and extending 
over fruit, surrounded by horizontal, membranous, finely-veined wings 
connected in a ring about half an inch in width. Total diameter, includ- 
ing fruit, about 1!/, inches. Perianth woolly tomentose, the latter 
character extending partly over surface of wings. Calyx-tube woody. 
Pericarp thin and membranous. — The species is easily distinguished 
from K. villosa by the convex fruiting perianth, as well as by the large 
expanison of the wings and by the larger leaves. — West-Australia: 
Isaac Tyson, 1908, Mt. Narryer, Murchison River. 
36. Monotaxis grandiflora Endl. var. minor Ewart, 1. c., p. 17. (Euphor- 
biaceae.) — Occurs in short, compact clusters of 4 to 9 cm height and 
breadth from one tap root, the leaves shorter and more closely set. — 
West-Australia: R. Helms, Nr. Warangering, Nov., 1891; and near 
Gnarlbine, Nov., 1891. 
X. Filices costaricenses. 
Von Dr. E. Rosenstock, Gotha. 
(Originaldiagnosen.) 
Nachdem Herr Dr. H. Christ die weitere Bearbeitung neuer Farn- 
sammlungen seines vorgerückten Alters wegen endgültig aufgegeben 
hat, habe ich die Bestimmung der mir in diesem Sommer von den Herren 
Alfred und Curt Brade aus Costa-Rica freundlichst übersandten Farne 
selbst übernommen und gebe im folgenden die Diagnosen der neuen 
Arten dieser Sendung. 
Meinen besonderen Dank spreche ich an dieser Stelle Herrn Oberst- 
leutnant Brause in Steglitz aus, der, wie schon öfter, die Güte hatte, 
mir zweifelhafte Arten im Herbar des Königl. Botanischen Museums zu 
Steglitz (Berlin) zu vergleichen und mir seine Ansicht über dieselben 
mitzuteilen. 
19901, Hymenophyllum semiglabrum Rosenst., nov. spec. 
-= Hymenophyllum; rhizomate filiformi, intricato, ramoso, radiculoso, 
sparse piloso, interstitiis 1—3-centimetralibus folia emittente; stipitibus 
1—2 cm longis, setiformibus, teretibus, nudis, pilis simplicibus paucis 
adspersis, mox glabrescentibus; laminis linearibus, sursum angustatis, 
olivaceis, ad 5 cm longis, 1—2 cm latis, subbipinnatifidis; segmentis 
primariis erecto-patentibus, subcontiguis, oblongis vel rhomboideis, 
pinnatifido-incisis vel furcatis, superioribus simplicibus; laciniis elon- 
gatis, linearibus, apice integris, obtusis, margine minute denticulato vel 
integerrimo, pilis rigidis, simplicibus geminisve, porrecto-adpressis in- 
Structo; rhachibus tenuibus, subflexuosis, ala integra, margine pilosa, 
5* 
