ICONES FILICUM SINICARUM 
PLATE 206 
ARCHANGIOPTERIS SUBROTUNDATA Ching 
ANGIOPTERIDACE 
ARCHANGIOPTERIS SUBROTUNDATA Ching, sp. nov. 
Species configuratione gregis 4A. Henryi Christ et Gies., differt pinnis nec lanceolatis sed late lineari- 
lanceolatis, inferioribus falcatis, infimis quam superioribus multo brevioribus, marginibus integris vel inter- 
dum undulatis, basin versus paulo dilatatis et rotundatis vel subrotundatis, vix conspicue angustatis. 
Stipe 36-60 cm long, greenish, deeply grooved on the upper side, with one nodose swelling at 20-30 cm 
above the base, copiously clothed especially in the lower part in reddish-brown linear ciliate scales; lamina 
about 40: cm long and as broad, broadly ovate, impari-pinnate; pinnae 4-6-jugate below the similar ter- 
minal pinna, alternate, about 4 cm apart, petiolate (petiole ca. 7 mm long, inflated), the basal pair much 
shortened (to 14 cm long) and like those next above rather strongly falcate, base rounded, the upper ones 
22-25 cm long, to 5 cm broad at the middle, broadly linear-lanceolate, gradually acuminate, hardly narrow- 
ed towards the rounded or subrounded, not cuneate base, margin entire, or at most slightly wavy below the 
dentate-serrate apical part; texture thin herbaceous, green, glabrous except the sparsely scaly costa beneath; 
veins patent, distinct beneath, 4 mm apart, forked or simple, decidedly curved upwards near the margin; 
sori linear, generally 8-12 mm long, far apart, situated midway between the costa and margin, leaving an 
equally broad sterile space on each side, densely paraphysate with freely branched articulate hairs longer 
than sporangia; spores oblong-reniform, finely echinate, hyaline. 
Southeastern Yunnan: Si-chour Hsien, Faadoon, K. M. Feng 12019, Sept. 27, 1947, in mixed forest, 
alt. 1500-1600 m. 
Plate 206. 1. Habit sketch (natural size). 2. Portion of pinna, showing venation, leaf-margin 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. Two paraphyses removed from sori (X 100). 6. Spores (X 100), one enlarged (X 400). 
