2 . L IIIO S E L LA , lin%.
1. L r a o s E L iA aqmtica, Liim. Sp. P I. p. 881. Engl. Bot. t. 357. Benth. in BC. Prodr. vol. x. p. 427.
Var. f t tenuifoUa. L . tenuifoUa, N u tt. Gen. N . Am. vol. ii. p. 4 3 . Gaudichaud, in An n . Sc. N a t.
vol. v. p. 102, et in Frege. Fog. Bo t. p. 133. B ’ Urv. in Mém. Soc. L in n . Paris, vol. iv. p. 607. Benth. in
DC. Prodr. vol. x. p. 427. L. austraUs, Brown, Prodr. p. 443.
H.ab. ra lk lan d Islands, Gaudichaud, J . B . H . Kerguelen’s Land, / . B . H .
I am cominced there is no specific distinction between the Llmosella aqmtica, L., and L. tenuifoUa, Nutt., and
have consequently imited them. In the specimens from the southern hemisphere whieh I have examined, the leaves
do not attain the breadth which those of the northern temperate regions generally present ; though, on the other
hand, both European, Asiatic, and North American plants of the X. aquatica have the foliage narrow as that of
X. tenuifoUa, to which variety some Arctic individuals of X. aquatica ai-e quite simüar.
The range of this species is nearly identical with that of Callitriche aquatica and Montia fontana, and there is
also a considerable resemblance in the mode and extent of their variation between these three plants. This is not
remarkable witb regal'd to Callitriche and Montia, which are veiy fi-equently seen associated together, invariably so
in Kerguelen’s Land, in the Falkland Islands, in Lord Auckland’s Group and CampbeU’s Island, and thus are influenced
in common by every fluctuation of climate and temperature, and by tbe depth or rapidity of the cm-reiit,
when growing in the water ; but the Uvwsdla does not occur mixed with these two genera, even though inhabiting
the same islands.
In Kerguelen’s Land the Limosella is found in the muddy bottom of a lake, and probably flowers all the year
round. I gathered it in the month of July (mid-winter), beneath two feet of water, covered ufltli two inches of ice ;
even then it had fully-formed flowers, whose closely imbricating petals retained a bubble of air, the anthers were full
of pollen and the ovules apparently impregnated. The climate of Kerguelen’s Land being such, that this lake is
perhaps never dried, it follows that the plant has here the power of impregnation when cut off from a free communication
vnth the atmosphere, and supplied with a very small portion of atmospheric air generated by itself. My
Falkland Island specimens are in a veiy poor state. Gaudichaud, who first detected it in that Island, considers it
identical with the European plant.
3. Y'EEONICA, I .
I . T eeonica elliptica, Forst.; El. A n t. part 1. p. 58. V. decussata. A it. et auetor.
H a b . Strait of Magalhaens to Cape Horn in Fuegia, Ccmmerson, Banks and Solander, and all succeeding
voyagers. We st Falkland Island, chiefly on the southern and western coasts.
2. V eronica serpyllifolia, Linn. Sp. PI. p. 15. Engl. Bot. 1 .1075. Gaud, in Ann. Sc. N a t. vol. v.
p. 102, et in Freyc. Voy. Bot. p. 133. B ’ Urv. in Mém. Soe. L in n . Paris, vol. iv. p. 607.
H ab. Falkland Islands, abundant near the colonized parts o fth e Islan d s; B ’Urville, fyc.
This species, in aflTectmg principally the vicinity of the settlements and groimd much frequented by cattle, was
probably introduced originaUy from Europe into the Falkland Islands. I t is found no where else in the southern
hemisphere, except the neighbourhood of Quito, where Mr. Kunth doubts its being indigenous, or in equaUy
equivocal situations.
I . OURISIA
4. O U m S IA , Comm,
dea, Ju ss,; caule repente, foliis subradicalibus longe petiolatis cordato-ovatis
F L O EA ANTARCTICA.
orbiculatisve obtusis crenatis floralibus orbiculatis semianiplexioaulibus, peduneuhs dissitis, ctflyciUaciniis
ovatis obtusiusculis ciliatis subbilabiatim connatis. Benth. in BC. Fro&r. vol.x. p .4 9 2 . G a ftm e r ,fi . ^ m e .
vol. iii. p. 44, non Poepp. et Endl. Clieloue ruelloides, U n n . f i l . Snppl. p. 271.
H a b . Strait of MagaUiaens, Commerson; Good Success Bay, B ank s and Solander; Staten Land,
Mr.
Caules breves, orassiusenli uti petioH nervi folioinm et calycis margo pilis nonnidlis patentibus cL ati; planta
cæterimi glabra. Fetioli 3-4 poll, longi. F o lk crassiuscula, majora 2-34 pollicaria, crenis imequabbns floralia
semi-pofficem lata. Bacemus fere a basi scapi florifer, Pedioeai fructiferi ultra poUicares. Calycw lacmim S-2v
lin. latm. Corolla 7-8 bn, longa, tubo ampio incurvo, limbi laciniis retusis. Capsula late orbioulata. compressiuseula.
Benth. l.c.
Tills, of which I have seen but a single specimen, must be one of the handsomest Fuegian plants ; it is apparently
very scarce, for it does not exist in the coUections of Capt, King or Mi'. Darwin, nor have I myself gathered it.
2. OüRisiA hre v ip ra , Benth.; humiUs, pilosa, caule ascendente foUato 2-4-floro, foliis petiolatis ovato-
orbiculatis basi trnncato-subcordatis florahbus sessihbus ovatis, calycis segmentis linean-oblongis tubo
corohæ longioribus. Benth. in BC. Prodr. vol. x. p. 493. (Ta b . C X V III. sub nomine 0 . Antarotwm).
H a e . Strait of Magalhaens, P o rt Famine, Capt. Kin g ; South part of Tierra del Fuego, C. Ba rwm, Esq.
Hermite Island, in clefts of rocks on th e mountains, J . B . II.
Caules basi ramosi, 2-3-poUicares. Folia vix semi-polliearia. Calycis segmenta fere 3 lin. longa, angusta,
obtusa, Corollæ limbus valde obliquus. lacimis emarginatis, infima quam tubus paulo longior,
A pretty httle species, probably not rare iu Fuegia, tbougb readUy overlooked from its very diminutive size.
Wben the accompanying plate was prepared and the name 0 . Antarctica applied to it, I was not aware of Mi'. Bentham
having named tbe plant in the then nnpulihshed volume of De Candolle’s Prodromus.
The genus Ourisk is liighly interesting, from being among those pccuhar to the Antarctic or lugher latitudes
of the southern regions, which have no analogue in the northem, but which, though most abundant m Antarctic
America, have representative species in tbe temperate portions of Ten-a Australis (0 . integrifolia, Sm.), and in New
Zealand or temperate Polynesia (0 . maerophylla. Hook.).
P ia t e CXYIII. (mider the name of 0. Antarctica). Fig. 1, flower ; f g . 2. corolla laid open ; f g . 3, ovanum ;
fig. 4 , transverse section of the same ; fig. 6, ripe fruit ; fig. 6, transverse section of the same ; fig. 1, seed ; fig. 8,
longitudinal section of the same :—all magnified.
5. EU PHRA S IA, L .
E u phrasia Antarctica, Benth.; minima, subsimplex, pubescens, foliis cuneato-trifldis lobis obtusis
brevibus, corollæ tubo exserto limbi lobis breribus subintegris, capsula ovata obtusa. Benth. in BC.
Prodr. vol. V. p. 555.
H a b. Strait of Magalliaens ; Cape Negro, C. Barmin, Esq.
Herba porpusiha, vix poflicaris, glanduloso-piiberula. CauUs erectus, simplex v. divisus, fohosus. Folia 1-3
lin. longa, cuneata, in lacinias 3 lineares obtusas ad medimn fissa. Flores inter folia summa sessiles, pro planta
magnæ. Calyx tubiiloso-campanulatus, glabriiisciiliis, breviter 6-fidiis, lobis obtusis, apice puberulis, marginibus
siccitate atrntis. Corollæ tubiis calycem superans, lobis oblongis obhque emarginato-truncatis, galea vix sub lobis
concava. Stamina coroUam suboequantia, antberis basi bi-aristatis.
A very minute species; also found at Coquimbo iu Chih, by M. Gay. It is the southern representative of