414 MR. C. CHRISTENSEN ON THE FERNS OF THE 
12. DRYOPTERIS Hornet (Baker), O. Kuntze; C. Chr. Ind. 27 1.— Nephrodium Hornei, 
Baker, Fl. Maur. 497. 
Mahé, Horne, 182! Silhouette, Horne, 685! 
Endemic. The pubescence is peculiar, the coste and costulee above are rufous-tomen 
tose from short, articulated hairs (the typical pubescence of my subgenus Ctenitis); the 
veins beneath are densely covered with very short and thick, appressed glandular hairs, 
which in well-preserved specimens are glossy, golden yellow, in old specimens whitish, 
meal-like. I remember only one species which shows a similar pubescence, viz. 
D. ehrysotricha (Baker), C. Chr., from Samoa, but in that the hairs are bright yellow. 
13. AsPIDIUM PLEIOTOMUM (Baker) Kuhn; C. Chr. Ind. 88.— Nephrodium pleiotomum, 
Baker, Tr. Roy. Irish Acad. xxv. (1875), tab. 315; Fl. Maur. 500. 
Mahé, Horne. Silhouette, Gardiner ! 
Also Madagascar, fide Baker. 
14. POLYSTICHUM ADIANTIFORME (Forst.), J. Sm.; C. Chr. Ind. 578.—Aspidiwm capense, 
Willd.; Baker, Fl. Maur. 492. Aspidium coriaceum, Sw.; Kuhn, Bot. v. Ost- 
Afrika, 69. 
Mahé and Silhouette, Gardiner! Sometimes partially epiphytic. 
Distribution. Australia and Southern Polynesia. South Africa and adjacent islands. 
America from Cuba and Jamaica to Fuegia. A common species in most oceanic islands 
of the southern hemisphere. The numerous specimens collected by Gardiner are rather 
different, especially in size; some of them are scarcely more than bipinnatifid with a 
lamina not more than 10 em. long, but fully fertile. 
15. LEPTOCHILUS BIPINNATIFIDUS (Mett.), C. Chr. comb. nov.—Chrysodium bipimna- 
tifidum, Mett.; Kuhn, Fil. Afr. 50. Acrostichum repandum, Baker, Fl. Maur. 514 
(non Blume). 
Mahé, Boivin! Gardiner! Silhouette, near the summit, Gardiner! 
Perhaps endemic. It is also recorded from Réunion (coll. Boivin); but Jac. de 
Cordemoy has not seen it. All Boivin’s specimens in the Museum of Paris seen by me 
are from the Seychelles. 
I now think that this can safely be regarded as a species distinct from the Asiatic and 
Polynesian L. cuspidatus, C. Chr. (Acrostichum repandum, Blume). It differs in the more 
deeply eut pinnze, which are truncate at the base, not cuneate, and in the more decidedly 
scaly coste. The lowermost pinnze are rather unequal-sided, the upper ones decurrent 
at the lower base, and the fertile pinnæ deeply cut into bluntly rounded lobes. The 
sterile fronds often have rooting tips. 
16. OLEANDRA ARTICULATA (Sw.), Presl; Baker, Fl. Maur. 493; C. Chr. Ind. 466. 
Mahé, Gardiner! Silhouette, near the summit, Gardiner! * Epiphytie, notable 
climber." 
Distribution. Through tropieal Africa to Cape Colony, and especially common in the 
South-east African islands. 
