r 



ICONES FItlCUM SJNICARUM 



PLATE 2 . 



ARCHANGIOPETRIS HENRYI Christ et Giesenha 



gen 



MARATTIACEAE 



ARCHANGIOPTERIS HENRYI Christ et Giesenhagen in Flora Regensb. 73 (1899); Christ in 



in Bull. Boiss. 7: (1899); Diels in Nat. Pfl. Fam. 1.4.439; C. Chr. Ind. 62 

 (1906); Matthew in Journ. Linn. Soc. 39:342 (1911). 



Rhizome not seen; stipe about 50 cm. long, thick as swan's quill, terete, obscurely 

 green, not articulate to the rhizome, and like rachis and the petioles obscurely hairy 

 with lanceolate scales; frond about 50 cm. long, 25 cm. broad, ovate, pinnae remote, 

 alternate, 3-5 on each side, similar to the terminal one, oblong-ovate, acute, 25 cm. long,' 

 6 cm. broad, entire, slightly crenulate above the middle, acutely serrate towards the 

 apex, petiole 1.5-2 cm. long, blackish, inflated, conspicuously pilose; texture thin chart- 

 aceous, light green, stipes and petioles rather succulent; veins dense, about 80 in each 

 side, almost horizontally patent, almost extending to the margin; sori medial, with a 

 broad free space about A cm. broad from the margin and the costa, linear, reddish-brown, 

 about 80 on each side, to 2 cm. long, i| mm. broad, exinduciate. 



Distribution: Yunnan. 



This peculiar fern holds a systematic place between Danaea of America and 

 Angiopteris of Tropical Asia, from the latter, it differs in elongate moniliform medial 

 sori consisting of numerous sporangia, inflated petiole and simply pinnate frond. One 

 of the most noteworthy discoveries made by A. Henry. A very rare plant, as not been 

 known elsewhere in this country. 



Plate 2. Fig 1. Habit sketch, (natural size). 2. A portion of pinna, showing venation and a 

 portion of sorus (x 1.6). 3. A cross section of sorus, showing attachment of sporangia and para- 

 pnyses (x 46). 4. Two sporangia, a. front view; b, lateral view (x 52). 



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