DESCRIPTIONS OF THE SPECIES 
123 
A wandering long-rhizomed fern, growing in or near 
tropical African streams, Senegambia, Sierra Leone, and 
Zambesia. 
Portuguese East Africa.— Kurumadzi River, Jihu, 2000 ft (S^ynnerton, 
834); Inyamkawha River, Mafuse, 3000 ft and Chikamboge Valley, 
3000 ft, in stream, common, 1906 (Swynnerton, 833) ; Manganja 
(Kirk). 
(Leptochilus AURICULATUS (Lam.) C. Chr. 184 is a 
tropical African fern and is recorded from Zambesia, but I 
have no exact record or locality, and it may or may not 
occur within our district. Under the name Acrostichum 
( Gymnopteris ) punctulatum Sw., Baker gives the following 
description of it in Synopsis Filicum : 
“Rhizome firm, wide creeping; st. of the barren frond 6 — 12 in. long, 
slightly scaly, the latter 12 — 18 in. long, often 1 ft broad, with a terminal 
pinna and 1 to 8 on each side, which are 4 — 9 in. long, 1 — 2 in. broad, 
lanceolate or oblong, narrowed at both ends, the edge entire or repand ; 
texture papyraceous ; rachis and both sides naked ; main veins pinnate, 
with copious hexagonal areolae between them without free veinlets ; fertile 
frond on a longer slender stem with similar but much smaller pinnae. 
Hk. Sp, 5, p. 258. A. punctatum Linn. 
Hab. Mascarene Isles, Zambesiland, Guinea Coast, Angola.” 
He places it in section Gymnopteris which has veins 
anastomosing copiously, main veins distinct nearly or quite 
to the edge, whereas L. Heudelotii is placed in section Chry- 
sodium which also has veins anastomosing copiously, but 
“ main veins none or indistinct.”) 
Oleandreae. 
Genus 13. Oleandra Cav. 
Fronds simple, articulated to the long woody scandent 
rhizomes, and having one central costa from which the smaller 
veins spread to the margin. Veins rising one or two together, 
simple or dichotomously forked into parallel veinlets, and 
bearing the sori in an irregular line near the mid-rib, and 
mostly on unforked veins. Sori covered by a reniform in- 
dusium. This genus consists of ten species of similar and 
very distinct habit, all tropical or almost so, but represented 
in many countries. 
