332 THE FLORA OF THE NORTHERN TERRITORY. 



SERIES IV., UNINERVES. 



SUB-SBRIB i AnGUSTIFOLIAH. 



5. A. Sentis, F. v. M. — " 34. Idracowra Station, Finke River, 6th 

 March, 1911. Host of No. 35." Phyllodes and pods. 



" 109. 37 mile.s east of Hermannsberg, Finke River, 21st March, 1911. 

 Up to 15 feet." Phyllodes and pods. 



" 505. 35 miles S.E. Newcastle Waters, stunted bush on plains. 9th 

 August, 1911." In flower. 



" 558. Head of Macarthur River, Northern Territory, small tree. 3rd 

 September, 1911." In flower. 



SERIES v., BRUNIOIDEAE. 



6. A. spondylophylla, F. v. M. — " No. 178. Haast's Bluff, Macdonnell 

 Range, 3000 feet. 16th May, 1911." In flower. 



7. A. Jenseni, n. sp.—" No. 384, N.T. Survey Camp 14, 20th June, 1911. 

 On sandhills, grows to 20 feet, If inches in diameter." 



Frutex altus vel arbor parva altitudinem 20' attinens, phyllodiis et ramulis visoidis, 

 glabris, ramulis fere teretibios. Phyllodiis oblanceolatis, 2.5-4 cm. longis, reotis vel pauUo 

 curvatis, nervo medio venis lateralibusque prominentibus, orassiuaculis et minutis 

 glandulia uniformiter tectis. Floribus glabris, 5-meris, capitulis oa 30-floris longis pedun- 

 culis glandulosis aliquando, 2.5 cm. longis. Calyce truncato, nervis distinctis calycis 

 loborum apicibas inorassatis. Fetalis plus dimidio longitudinis oonjunciis. Pistillo laeve. 

 Legumine semineque non visia. A. salicinae, Lindl., afflnis videtur. 



A tall shrub or small tree attaining a height of 20 feet, and a trunk diameter 

 of 1 J inches, branches rigid, perhaps pendulous, the foliage pale yellowish green, 

 and together with the branchlets viscid, quite glabrous, branchlets nearly 

 terete, but slightly angled, particularly towards the ends, through sUghtly 

 raised ribs extending from the bases of the petioles. 



Phyllodia oblanceolate, 2.5-4 cm. (say 1-lJ inches long), about 4 mm. 

 wide, straight or but slightly curved, terminating in a short point, midrib and 

 lateral veins somewhat prominent, the marginal vein slightly incurved, gland at 

 base of phyllode, texture rather thick and covered uniformly with minute glands. 



Flowers glabrous, 5-merous, about 45 in the head. Flower heads on long 

 peduncles, which are glandular. Sometimes nearly 2.6 cm. (1 inch) long. 

 Usually axillary, sometimes racemose. 



Bracts narrow, spoon-shaped, smooth. 



Calyx truncate with marked nerves, which are thickened at the tips of the 

 calyx lobes. About two-thirds of the length of the petals. 



Petals united two-thirds up, spreading a little. 



Pistil smooth but not shiny, hoary. Pod and seed not seen. 



The name proposed for the species is in honour of Dr. Harold Ingomar 

 Jensen, who, when Government Geologist of the Northern Territory, collected 

 the local flora, particularly Eucalyptus, on his official journeys, and supplied 

 valuable notes in regard to them. 



This species belongs to the series Uninerves, Section Angustifoliae. 



It appears to be closest related to A. salicina, Lindl., and in the absence 

 of pods and seeds it may be separated from that species by the viscid and 

 generally smaller phyllodia, the flower heads on long peduncles, which are 

 covered with resinous glands, and in the shape and sculpture of the calyx 

 which is longer and extends two-thirds along the corolla. 



