REVISION OF TECTA RI A. 
415 
1736; Mindanao ( Cuming 290); Camp Keithley, Clemens 160, 251; 
Davao, Copeland 929, 1467. The herbarium of the Bureau of Science 
has two unnumbered specimens of Cuming’s collection, labeled Sagenia 
platypliylla J. Sm. According to Christensen (Index p. 614) this is 
A. cicutarium; but he (1. c. p. 87) interprets A. platypliyllum Presl 
which Presl says = S. platypliylla J. Sm. as A. repandum Willd., which 
is my judgment as well. Elmer No. 7060, from Leyte, is also this species, 
in my judgment; it has the ancestral form of the genus Hemigramma, 
Christ. 
This is a reasonably variable fern, in form, margin, and indusia; but 
the chief difficulty in treating it is not natural, but due to the jumble of 
names in use. Willdenow published the name repandum with the avowal 
that Cavanilles’ description would tit his plant except that the latter 
stated the pinnae to be alternate. They are indeed rather more often 
opposite, but by no means constantly so. The indusia are peltate and 
reniform on the same plants. The manner in which this species has 
been shifted between Sagenia and Tectaria illustrates the futility of trying 
to maintain in this group, genera based on the indusium. The fertile 
fronds are sometimes like the sterile, but usually somewhat contracted 
(Cf. Sp. Fil. 4: 57); in view of this fact, I doubt the propriety of 
maintaining personferum as a separate species. Cavanilles says “fruc- 
tibns numerosissimis 
10. Tectaria ambigua (Presl) Copel. nom. nov. 
Digrammaria Presl, Tent. Pterid. 117, 1836. Aspidium profereoides 
Christ, Phil. Journ. Sc. 2 C. (1907) 158. 
Davao, Copeland 1467 A. This is a very distinct species whose 
venation and texture, and sparsely hairy sinuses and contracted fertile 
fronds strongly suggest Stenosemia. It is related to T. gigantea 
(Blume). 
11. Tectaria calcarea (J. Sm.) Copel. nom. nov. 
Sagenia J. Sm., Journ. Bot. 3 (1841) 410. Aspidium Presl. Epim. 
Bot. 63. Mett. Aspidium 283. 
Leyte, Cuming 310. 
A very peculiar plant known only from Cuming’s collection. Met- 
tenius gives an excellent figure (1. c. Plate XVII) . Some of the. indusia 
are peltate, others not so. 
12. Tectaria devexa (Kze.) Copel. nom. nov. 
Aspidium Kze. Bot. Zeit. (1848) ; 259. A. membranaceum Hook. Sp. 
Fil. 5; 105. 
Cuming s. n. ; Mindanao, Davao, Copeland 898. 
This is certainly A. membranaceum Hook. ; I have followed Christensen 
in taking Kunze ? s name. 
