ICONES FILICUM SINICARUM 
PLATE 207 
ARCHANGIOPTERIS LATIPINNA Ching 
ANGIOPTERIDACE 
ARCHANGIOPTERIS LATIPINNA Ching, sp. nov. 
Species gregis A. Henry: Christ et Gies., a qua differt frondis textura duriore, pinnis late ovato- 
lanceolatis, inferioribus falcatim recurvatis, ad apicem potius breviter acuminatis et insuper soris longioribus. 
Stipe 47-55 cm long, 5 mm across, deeply sulcate above, moderately scaly in the lower part, with one 
nodose swelling at about 20 cm above the base; lamina oblong-ovate, 35-45 cm long, 26-30 cm_ broad, 
imparipinnate; pinnae 2-3-jugate, alternate, 4-5 cm apart, oblique, the basal pair only slightly shorter than 
those next above, the lower ones falcately curved, the upper ones to 20 cm long, 5-55 cm broad, the 
broadest part being near the middle, broadly ovate-lanceolate, gradually narrowed towards the cuneate 
base, apices rather short-acuminate, or acuminate and serrate, margin entire and more or less repandulate, 
petiole about 1 cm long, scarcely inflated and subglabrous; texture thickly chartaceous, both sides glabrous 
except a few small scales along the rachis and costa underneath; veins lax, patent, forked or simple, an- 
trorsely curved towards the margin, distinct on both sides; sori 1-15 cm long, midway between the margin 
and costa, leaving a sterile space about 7 mm broad equally as wide along the margin as along the costa, 
and separated from each other by broader interstitial sterile spaces, paraphyses quite dense, somewhat longer 
than the sporangia; spores roundish rather than oblong, minutely and densely verrucose. 
Southeastern Yunnan: Ping-pien Hsien, H. T. Tsai 60299, June 19, 1934 in woods, alt. 1200 m. 
This new species resembles, in a superficial way, so closely 4. Henryi Christ et Gies, that the type 
number on which it is based has actually been filed for sometime under that species. A. latipinna differs 
from the generic type described in 1899 in several constant and correlated characters, namely, thickly char- 
taceous texture of the fronds, repandulate margin of the much broader pinnae, of which the lower ones 
are decidedly falcate and the more widely separated sori due to the more lax venation with broader inter- 
stitial spaces. 
Plate 207. 1. Habit sketch (natural size). 2. Portion of pinna, showing venation, serrature and sori (X 4). 
3. Scale from the lower part of stipe (X 30). 4. Two sporangia attached to the receptacle with paraphyses (X 20). 
5. Paraphyses removed from the sori (X 100). 6. Spores (X 100), one enlarged (X 400). 
