the Island of Tiistan da Cunha, ^c. 503 



This plant grows all over the low ground ; never, how- 

 ever, taking root as is implied in the specific name. The 

 extremities of the branches are ascending. 



2. IsoLEPis SULCATA, capitulo laterali globoso polystachio, 



spiculis ovatis, squamis lut^ ovatis nervosis margine sca- 



riosis apice calloso. 

 Scirpus sulcatus. Aiihert op. cit. p. 36. 

 Culmus 1 — 2-pedalis, nudus, compressus, sulco exaratus. 



Stamina 3. Stigmata 3. 



It grows on the plain in large tufts. 



3. IsoLEPis BicoLOR, culmis angulato-filiformibus, foliis cana- 



liculatis angustissimis, capitulo terminali, spiculis (5 — 7) 

 ovatis teretibus, squamis margine coloratis, involucro sub- 

 diphyllo : foliolo altero erecto capitulum superante ; altero 

 deflexo spiculam vix aequante. 



This plant grows in moist situations, both on the low 

 ground and the table-land. It collects in tufts, rising from 

 a spongy base resembling a rotten stalk. 



4. IsoLEPis sQUARROSA, culmis angulato-filifomiibus indivisis 



basi foliatis, foliis canaliculatis angustissimis, capitulo ter- 

 minali globoso, spiculis (12 — 20) ovatis, squamis margine 

 concoloribus, involucro diphyllo: breviore deflexo. 



5. IsoLEPis PROLi PER, culmis angulatis ramosissimis, foliis fas- 



ciculatis, capitulis passim proliferis, spiculis oblongis tere- 

 tiusculis, involucro diphyllo. 

 Scirpus prolifer. Aubert op. cit. p. 36. 



Grows on the plain. 



6. Spar- 



