ICONES FILICUM SINICARUM 
) PLATE 209 
ARCHANGIOPTERIS TONKINENSIS (Hayata) Ching 
_ ANGIOPTERIDACE 
ARCHANGIOPTERIS TONKINENSIS (Hayata) Ching, comb. nov. 
Protomarratia tonkinensis. Hayata.in Bot. Gaz. 67: 88, fig. 1. 1919. 
Archangiopteris tamdaoensis Hayata in Bot. Gaz. 67: 90, fig 2. 1919; C. Chr. Ind. Fil. Suppl. III. 26. 1933; 
C. Chr. et. Tard. in Lecomte, Not. Syst. 5: 5. 1935; Tard. et C. Chr. in Fl. Ind. 7: 17. 1939. 
Protangiopteris tamdaoensis Hayata in Bot. Mag. Tokio 42: 309. 1928. 
Stipe 40-45 cm long, pale green, broadly grooved in its whole length above, sparsely clothed in brown 
lanceolate dentate scales especially in the lower part, with a nodose swelling at 20-30 cm above the base, 
lamina broadly ovate in outline, much shorter than stipe, impari-pinnate with one large and long-petiolate 
terminal pinna similar to those immediately below; pinnae 2-4 pairs, opposite, oblique or obliquely patent, 
ovate-lanceolate, 20-25 cm long, 4-5 cm broad, petiolate (petiole about 5 mm long, inflated and blackish), 
broadest at the middle, gradually narrowed towards both ends, apex long-acuminate, base shortly cuneate, 
margin serrate with rather sharp and arcuate teeth; zexture more or less thickly chartaceous, glabrous above, 
very sparsely scaly along the rachis and on the under side; veins very patent, quite distinct below, forked 
or simple, curved upward, one into each tooth; sori 7-10 mm long, linear, midway between the costa and 
margin, finely paraphysate with branched articulate hairs much shorter than sporangia, finally becoming 
abraded; spores roundish-oblong, minutely and densely echinose, hyaline. 
Kwangtung: Hainan, Five Finger Mt. Shan Ah Ping, C. L. Tso 44184, Oct. 24, 1932, in woods, alt. 
3000 ft.; southern slope of the same locality, F. A. McClure 9470, May 19, 1922, in wooded ravines; C. 
Wang 35723, Dec. 20, 1933, by stream side. 
Tonkin: Tam Dao, B. Hayata (type of A. tamdaoensis Hayata), aott, 1917; Pételot 3956, Mai. 1913; 
environs de Chapa on the border of Yunnan, Péelot, aotit, 1913, vers alt. 1300 m. 
Annam: Cua Tung, Cadiére, Mai, 1934. 
The present species closely resembles A. Henryi Christ et Gies., differing in the much longer stipe 
(about twice as long as the lamina), ovate-lanceolate opposite pinnae with regularly and rather arcuately 
serrate margin and in having paraphyses much shorter than the sporangia. 
Plate 209. 1. Habit sketch (natural size). 2. Portion of pinna, showing venation, serrature and sori (X 4)° 
3. Scale from the basal 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). 
