NOTES ON ACACIA. 87 



Affinities. 



1. With A. plectocarpa A. Ounn. A. Armitii appears to 

 be a more rigid plant than A. plectocarpa. The flowers of 

 A. Armitii have slenderer sepals and a more hairy corolla; 

 it is a matter of surmise whether the unripe pods of A, 

 Armitii will develop into a pod identical with that of 

 typical plectocarpa, which becomes markedly embossed 

 when fully ripe. The markedly resinous character in the 

 young pods of A. Armitii is noticeable, and the only young 

 pods of A. plectocarpa I have seen are resinous. The seed 

 of A. Armitii as figured is ovoid; that of A. plectocarpa is 

 nearly round, with an almost circular depression. 



2. With A. Hemsleyi Maiden. The flowers of the two 

 species possess a very close resemblance; the rhachis of 

 A. Hemsleyi is smoother. The pods of the two species are, 

 however, very different, those of A. Hemsleyi being narrow, 

 and having elongated seeds longitudinally arranged. 



A. Hemsleyi n. sp. 



Juliflorse (Falcatse) 

 Frutex altus fere glabrus vel arbor parva, ramulis junioribus 

 angulatis. Phyllodiis lineari-lanceolatis, paullo falcatis, basin 

 versus angustatis, 9 — 12 cm. longis, 10-13 mm. latis, tenuibus, 

 3-5 nervis prominentibus. Spicis solitariis vel geminis axillari- 

 bus, temribus ad 4 cm. longis pedunculis 1 cm. vel longioribus. 

 Floribus dense confertis, calyce profunde lobato. Sepalis angustis 

 ca. dimidio corolla sequilongis, ciliatis. Petalis secundum lineam 

 mediam ciliatis, dimidio longitudinis connatis. Pistillo hirsuto. 

 Legumine lineari, 7-11 cm. longo, 5 mm. lato, gracile. Valvis 

 tenuibus, marginibus incrassatis, planatiusculis, paullo monili- 

 formibus, seminibus longitudinaliter dispositis. Funiculo tenue 

 in arillum basilarem terminante. 



A tall shrub or small tree, nearly glabrous, with branch - 

 lets angular when young, but soon becoming terete. 



