( 3420 ) 
ACACIA TRISTIs. Mournret ACACIA. 
EK EEK EE EEE KR EEE RREEK 
Class and Order. 
Potyeami1a Monaccta. 
( Nat. Ord.—Leeuminosz. ) 
Generic Character. : 
Flores polygami. Cal. 4—5-dentatus. Pet. 4—5, nune 
libera, nune in corollam 4—5-fidam coalita. Stam. numero 
varia, 1O—200. Legumen continuum, exsuccum, bivalve. 
Specific Character and Synonym. 
Acacta tristis ; stipulis setaceo-spinescentibus deciduis, 
phyllodiis faleatis nervis duobus inaqualibus margine 
Superiore recurvo, pedunculis subsolitariis cumque folio 
longiore ramuloque suleato puberulis. Graham. 
Acacta tristis. Graham MSS. 
This plant was raised at the Botanic Garden, Edinburgh, 
from seeds communicated by the late Mr. Fraser from New 
Holland in 1828, and flowered freely both in the green- 
house and on the open wall in March and April, 1835. _ Its 
nearest affinity is to A. undulata, Witxp., but may be easily 
distinguished from this by its lurid, not lively green colour, 
by the peculiar nervation of its leaves (phyllodia) by these 
being longer both actually and relatively to the peduncle, 
by its more setaceous stipules, which are lateral, not infe- 
Nor and distinct, not coalescent at the base, by its pubes- 
cence, by its capitula being generally single, very rarely in 
Pairs, the reverse of which is the case in A. undulata, in 
Which also the flowers are larger with much more acumi- 
Nated bracteew. It is also, and perhaps quite as nearly, 
allied to A. armata, from which it is distinguished by the 
smaller degree of hairiness of the branches, by the pubes- 
Cent peduncles shorter than the leaves, and by the nerva- 
tion of these. In the arrangement of the species it ought 
to stand between A. undulata and A. armata. The nerva- 
tion of the leaf is nearly that of A. verniciflua, from which 
't is distinguished by its stipule. I 
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