340 THE FLORA OF THE NORTHERN TERRITORY. 



In A. Kempeana we have the " calyx short-toothed, nearly three times 

 ■shorter than the unstreaked corolla" (compare also Iconography). In A. 

 sibirica the flower (already described) is about half the length of the corolla. 

 It seems to me that this is the most important difference, as far as our knowledge 

 goes at present. The calyx of A. sibirica appears to be larger and more deeply 

 lobed, and the. lobes are more obtuse than those of A. Kempeana ; the petals of 

 A. sibirica are somewhat recurved, while those of A. Kempeana are not, the 

 corolla cyhndroid, forming almost a vase-shape. (See Iconography). 



In A. sibirica the gland is distant from the base of the phyllode ; right at 

 the base in A. Kempeana. 



We hope to get pods and particulars of habit, bark and timber of A. 

 sibirica, but I think that A. sibirica is worthy of specific rank, and we have 

 Northern Territory locaUties for it, which is of some interest. 



30, A. Hilliana, n. sp.- — ""^17. 140 miles north of Northern Territory 

 Survey Camp iv., N.T. Bush 18 inches high, spread of 3 feet, 2nd July, 

 1911." 



" 327. 12 miles north-west of C (arrow) iii., 12th June, 1911." 



Frutex pumilus, patens, glaber, visoidus, ramulis teretibus. Phyllodiis lineari- 

 subulatis, acuminatis ad fere 3 cm. longis, teretibus v. pauUo applanatis, nerviis obscuris et 

 itenuibus, numerosis glandulis asperatis. Spieis cum pedunculis longis (2 cm.) ad 2.5 cm. 

 perfecte expansis. Sepalis angustis, petalis dimidio aequilongis. Fetalis maxima ex parte 

 ■conjunetis, deinde liberis, glabris, pauUo patentibus. Pistillo pruinoao. Legumine 

 seminibusque non vlsis. 



Species A. aneurap,, P. v. M., affinis. 



A dwarf, spreading, glabrous, viscid shrub, branchlets terete, or nearly so. 

 Phyllodia linear-subulate, pointed up to nearly 3 cm. (say 1 inch) long, terete or 

 shghtly flattened, obscurely and finely nerved, or nerves obscured by false 

 nerves, the result of irregular contraction of the tissue. The surface shghtly 

 roughened with numerous small glandular protuberances. 



Spikes singly or in pairs, with long peduncles (say 2 cm.), slender but 

 closely packed, up to 2.5 cm. when fully out. 



Flowers mostly 5-merous. 



Sepals narrow, irregularly united near the base, and sometimes free, 

 glabrous, thin and transparent, about half as long as the petals. 



Petals united two-thirds of the way up, shghtly spreading, glabrous. 



Pistil hoary. 



Bract capitate, glabrous. Pods and seeds not seen. 



This free- flowering and interesting species I name in honour of Gerald 

 Freer Hill, who collected it, and most of the specimens described in this 

 paper. His No. 417 I constitute the type. 



His 327 is more viscid, but otherwise typical. 



The following specimen " west of, near Lake Amadeus, Tietkens" (Tate's 

 handwriting), belongs to this species. A specimen in his handwriting has " A. 

 aff. aneura," and subsequently he struck, out the word " aff." It was after- 

 wards labelled " cyperophylla" by him. 



Prof. Tate, in Journ. Gent. Aust. Exp. Exped., 1889, W. H. Tietkens, p. 74 

 (1891), labelled this A. aneura. In Part LX. of my " Forest Flora of New 

 South Wales," I have tried to make clear Prof. Tate's views on A. cyperophylla, 

 but the data are not quite sufficient to say that he published a statement that 

 the present specimen is A. cyperophylla as well as A. aneura. There would 

 probably have been no difficulty had Tietkens' specimens been numbered. 



