APPENDIX. No. V. 459 
Egypt; Fwirena umbellata and Eleocharis capitata,* both of which have been 
found in America, India, and New Holland; and Cyperus ligularis indigenous 
to other parts of Africa and to America. 
Hypelyptum argentewm, a species established by Vahl from specimens of 
India and Senegal, and since observed in equinoctial America by Baron 
Humboldt, is also in the collection. 
The name Hypelyptum, under which I have formerly described the genus 
that includes H. argentewm,t+ was adopted from Vahl, without enquiry into its 
origin. It is probably, however, a corruption of Hypalytrum,{ by which 
M. Richard, as he himself assures me, chiefly intended another genus, with 
apparently similar characters, though a very different habit, and one of whose 
species is described by Vahl in Hypelyptum; his character being so con- 
structed as to include both genera. M. Kunth has lately published H. argen- 
eum under the name of Hypelytrum ;§ but in adopting the generic character 
given in the Prodromus Florze Nove Hollandix, he has in fact excluded the 
plants that M. Richard more particularly meant to refer to that genus. It is 
therefore necessary, in order to avoid further confusion, to give a new name to 
Hypelyptum as I have proposed to limit it, which may be Lipocarpha, 
derived from the whole of its squame being deciduous. 
In describing Lipocarpha (under the name of Hypelyptum) in the work 
referred to, I have endeavoured to establish the analogy of its structure to that 
of Kyllinga; the inner or upper squamz being in both genera opposite to 
the inferior squama, or anterior and posterior, with relation to the axis of the 
spikelet: while the squamz of Richard’s Hypzlytrum being lateral, or right 
and left with respect to the axis of the spikelet,|| were compared to those of 
the female flowers of Diplacrum, to the utriculus or nectarium of Carex, and 
to the lateral bracteze of Lepeyrodia, a genus belonging to the nearly related 
order Restiacex.€] But as in Hypelytrum, according to M, Richard’s descrip- 
tion, and I believe also in his Diplasia,** there are sometimes more than two 
inner squamz, which are then imbricate, they may in both these genera be 
considered as a spikelet reduced to a single flower, as in several other genera 
* Prodr. Flor. Nov, Holl. \, p. 225. Scirpus capitatus Willd. sp. pl. 1, p. 294, exclus. 
syn. Gronovii. 
+ Prodr. Ftor, Nov. Holl. 1, p. 219. t Persoon Syn. Plant. 1, p. 70. 
§ Nov. Gen. et Sp. Plant. 1, p. 218. | Prodr. Flor, Nov. Holl; 1, p, 219. 
I Flinders’s Voy. 2, p. 579. ** Persoon Syn. Pl. 1, p. 10. 
