284 
FLORA OF THE SUNDRIBUNS. 
229. 
230. 
331 
232. 
233 * 
334‘ 
235- 
236. 
237- 
238. 
239. 
240. 
241 
242. 
243' 
244. 
245 - 
(217) Unarmed species ...... 
Armed shrubs or under-shrubs ; spines axillary 10 1, Azima, 
Trees or large shrubs ; petals present .... 2^1 
•Herbs ; petals wanting ...... 233 
Stamens 5 or fewer ; fruit not tipped by the calyx . , 232 
Stamens numerous ; fruit large, crowned by the persistent 
calyx-lobes » . . . , ,68. Psidium. 
Flowers 3*6 from small tubercles j fruit a small hard berry ; 
rambling shrubs ^ . 27. Salacia. 
Flowers many, in lax panicles; fruit a compressed fleshy 
edible drupe ; considerable trees , . 34, Bouea, 
(230) Stem prostrate, rooting at the nodes .. . . 234 
Stems erect ...... •jq. Ammannia. 
Sepals connate in a short calyx ; stamens free, inserted 
round mouth of calyx-tube ..... 233 
Sepals free ; stamens connate in a cup below ovary . , 236 
. .... 80. Sesuvium, 
.... 81. Trianthema. 
the outer ones 3-ribbed ; stamens 5 ; 
. e . . 146. Psilotrichum. 
flexible, not ribbed; stamens 23; 
. . , . I4y. Alternanthera. 
(i) Fronds very large as compared with the stem , 238 
Fronds small or minute ...... 24^ 
Fronds circinate ; sporangia on under-surface , , , 
Fronds erect ; sporangia spicate in crested clusters on a 
separate segment . . . 243. Helminthostachys. 
Sori confined to margins or veins of under-side of fronds . 240 
Sori spread over whole under-surface of fertile fronds or 
242. Acrostichum. 
Capsule 3-5-celled 
Capsule i-2--celled 
(234) Sepals hard, 
anthers 2-celled 
Sepals herbaceous, 
anthers i -celled 
parts of fronds . . . 
Epiphytic or terrestrial ferns . . 
Aquatic ferns, growing in still waters 
Sori remote from margins of fronds 
Sori marginal or nearly so 
Sori covered by an indusium 
Sori without an indusium 
Indusium reniform 
Indusium oblong or linear . . 
(241) Sori protected by an indusium 
Sori without an indusium . 
Sporangia attached to under-side of indusium, which con- 
sists of the intucked margin of the frond 234. Adiantum 
. . . 241 
236. Ceratopteris 
. .. . 242 
. 244 
. . • 243 
23g. Poly podium. 
238. Nephrodium. 
. 237. Asplenium. 
• • • 243 
... 246 
