406 ARETHUSE.E. 
1. BiriNNULA Commersonii. Lindl. in Brande's Journ. March. 1827. 
B. caule unifloro, sepalis lateralibus pinnatis ; laciniis brevibus clavatis. 
Arethusa biplumata. Linn. Suppl. 105. Smith, ic. t. 23. 
Bipinnula bonariensis. Spreng. syst. 3.745. 
Hab. in agro Bonariensi, Jussieu. 
Of this rare plant I have seen no specimen: but it is evidently very 
distinct from the two other species of the genus. 
2. BiriNNULA plumosa. Lindl. in Brande's Journ. March, 1827. 
B. spicà multiflora, sepalis lateralibus acuminatissimis pinnatis; laciniis 
filiformibus elongatis, labelli margine multipartito inciso. 
Hab. in Chile, ad Coline balneos, Macrae. (hab. s. sp.) 
Stem 1} to 2 feet high; lateral sepals in the dried specimen an inch 
and three quarters long. 
3. BrriNNULA mystacina. Lindl. in Hook. Journ. Bot. 1. 5. 
B. spicà multiflora, sepalis lateralibus apice dilatatis pinnatis: laciniis 
filiformibus ramosis, labelli dimidio superiore seriatim tuberculato 
inferiore lamellato. 
Chlorza fimbriata. Pöpp: nov. gen. &c. 1. p. 30. t. 51. : 
Hab. in Chile; prope Valparaiso, Cuming; in montibus maritimis arenosis 
inter Colletiarum agmina horridissima, Jul. Aug. Póppig. (hab. s. sp.) 
In Póppig's figure the divisions of the lateral sepals are represented as 
simple, but I presume this is an error, for his plant agrees in ail other - 
respects with mine. According to this botanist the sepals are pale green, 
the petals yellow, the lip white, with green appendages. 
CCXXVII. ASARCA. 
Asarca. Püppig, n. g. et sp. pl. 2. 13.——————Gavilea, Jd. 1. 28. 
Perianthium explanatum, basi obliquum, petalis patentissimis. Sepala 
lateralia basi producta sed vix gibbosa, labello supposita, reflexa, 
apiculata, et sæpiùs callosa. Labellum ungue brevi bicalloso columne 
adnatum, carnosum, trilobüm, lobo medio lateralibus multd angustiore 
et productiore, venis presertim disci glandulosis aut lamellatis. te 
lumna erecta, brevis, semiteres, apice incrassato-marginata. Stigma 
oblongum, prominens. Anthera et pollinia Chloree. Herbe 
Chlorzze facie, (Flores albi, aurantii, interdum tricolores, odoratissim!, 
Püppig.) 
When I proposed the genus Asarca, in Brande's Journal, I intended : 
to contain those Chlorza-like Chilian plants whose sepals are destitute 0 
a thickening at the apex. But an examination of more species, and the 
evidence afforded by Póppig's work, has satisfied me that this distingue 
is not sufficiently constant or important for the purpose to which I applie 
it. Among the Chlorzas I meant to include. the Gavilu of Feuillée 
t. 18, with a short column, and spreading flowers, and some congeneric 
species actually were included. These Póppig has rightly separated, under 
the name of Asarca, and he has given figures of several of them. It is to be 
