from Western Australia. 385 
in capitula 4-flora, cernua, brevissimé pedunculata, ad extremitates ramorum brevium 
axillarium sita, bracteis 4 ovatis, coriaceis, extüs velutinis inclusa, parüm infra ramuli 
apicem in mucronem brevem sericeum productum verticillatim dispositi. Calyx extüs 
longè sericeus, ebracteatus, bilabiatus; labiis valde inaequalibus, superiore minore, fere 
ad basin fisso, inferiore 4-plò longiore, profundé tripartito. Corolla papilionacea. Petala 
omnia longè stipitata, atro-rubra. Vexillum minimum, laminá lanceolato-ovata, stipite 
paullo breviore, reflexà. Alc segmenta lateralia labii inferioris calycis sequantes, carina 
i breviores, lamina ellipticá, basi cucullatá, stipitem subaquante. Carine elliptico- 
oblongs, calycem parüm excedentis, petala basi suprà auriculata, dorso cohzrentia. 
Stamina 10, persistentia, inzequalia, anteriora longiora, parüm exserta. Filamenta 
glabra, basi dilatata, obliqué calycis tubo (et 3 inferiora inter se) brevissime connexa. : 
Antherze oblong uniformes. Germen subsessile, ovatum, ventricosum, pilis longis 
sericeis vestitum, 4-6-ovulatum, suturis non introflexis, stipitulo basi vaginulá carnosá 
cincto. Stylus filiformis, glaber, staminibus paulló longior, apice incurvus. Stigma 
minutum, subcapitatum. Legumen haüd visum. 
Habitat in Nove-Hollandiz orá Austro-occidentali, ad * Scott's River," ubi (anno 1842?) 
legit beat. Gilbert (v. s.). Vidi etiam specimen, habitu debiliore, et foliis ramulisque 
pubescentioribus, paullo diversum, a Dom. Jac. Drummond in vicinitate Colonize * Swan 
River" lectum, et a Dom. C. M. Lemann, M.D. mihi benigné communicatum. 
The nearest affinity of Jansonia unquestionably is with Brachysema, with 
which genus it agrees in its unguiculate petals, in the form and unusual 
length of the keel, iu the extreme shortness of the standard, in its elongated 
filiform style, and in its shortly-stalked villous germen, surrounded at the base 
by a minute fleshy ring. It is however abundantly distinguished by its capi- 
tate inflorescence, by the remarkable inequality of its calycine segments, by the 
much greater length of the claws of its petals, and by the paucity of its ovules, 
which in Jansonia do not appear to exceed six in number, while in three spe- 
cies of Brachysema which I have examined, I have never found fewer than 
twelve. 
From its possessing many of the characters ascribed to Leptosema, I was 
at one time disposed to regard my plant as a second species of that genus, 
although evidently very different in habit from the one described by Mr. Ben- 
tham in the *Annalen des Wiener Museums; from a specimen gathered by the 
late Mr. A. Cunningham at Sims Island, on the north coast of New Holland : 
but Mr. Heward having kindly permitted me to examine an authentic speci- 
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