Rumex.] Polygonacee. 241 
RuMex Linn. 
Leaves not hastate: 
Inner fruiting sepals strongly toothed . : . I. R. nepalensis. 
Inner fruiting sepals entire or subentire. yea. des Crispus, 
Leaves hastate ; : : : ; . 3¢ K. Acetoselta. 
For R. obtusifolius L. read: — 
1. R. NEPALENSIS Spreng. Syst. II, p. 159 (1825). R. obtusifolius 
Trim. FI. Ceyl. Ill, p. 415 (1895) non Linn. 
A single plant labelled R. dentatus was collected at Peradeniya by 
Trimen. There are no specimens from Nuvara Eliya. 
A native of the mountains of Tropical Asia and Africa. 
22 eRIsPus. Linn: Sp. Pi p. 335 (1753): 
Palugama, Uva (1883); no Nuvara Eliya specimens. 
A native of Europe and N. Asia, introduced in Africa. 
gm, AesetOseniA Linn, Sp: Pl.-p. 538 (5753): 
Lindula; no specimens collected by Trimen. 
A native of Europe and N. Asia, naturalised elsewhere. 
Page 415.— 
CVI.—PODOSTEMONACE/# 
(After J. C. Willis.) 
Fls. regular; perianth 3; stamens 3; carpels 3; 
thallus frondose, foliiferous, creeping, closely 
attached to rocks; secondary shoots of small 
rosettes of leaves on upper side of thallus; floral 
shoots arising from axial cupules . . I. Lawia. 
Fls. zygomorphic; perianth wanting; carpels : a 
Spathe erect, more or less cylindrical, opening at 
the apex by several teeth; fruit ribbed, de- 
hiscent with many seeds. 
Thallus fucoid or dimorphic, usually freely 
floating; secondary shoots 1-flowered, with 
scaly bracts; fruit isolobous . ; 2. DICRAA. 
Thallus thread or ribbon- like, creeping ; second- 
ary shoots erect, with several flowers; bracts 
dithecous, not scaley ; fruit anisolobous. . 3. PODOSTEMON. 
Spathe more or less prostrate, splitting along the 
upper side; thallus closely attached to the 
rock; secondary shoots usually prostrate 
when floriferous, 1-flowered, with small scaly 
bracts : 
Thallus crustaceous or ribbon-like, exogenously 
lobed or branched ; seeds numerous; fruit de- 
hiscent, iso- or aniso-lobous, ribbed, or smooth 4. HyYDROBRYUM. 
Thallus ribbon-like, endogenously branched ; 
seeds 2-4; fruit indehiscent, smooth. . 5. FARMERIA. 
16 Part III. 
