LEPTOSPERMUM AND ITS ESSENTIAL OIL. 175 
ON A NEW SPECIES OF LEPTOSPERMUM ANDITS 
ESSHNTIAL OIL. 
By R. W. CHALLINOR, F.I.C., F.C.S., EDWIN CHEEL, and 
A. R. PENFOLD, F.C.S. 
[Read before the Royal, Society of N.S. Wales, June 5, 1918. ] 
LEPTOSPERMUM CITRATUM Sp. nov. 
L. flavescens var. citratum Bailey and White, Queensl. 
Agric. Journ. Vol. v, p. 161, pl. 13 (1916); Bot. Bull. 
Xvill, p. 8, pl. 2 (1916). 
Frutex, nonnunquam ad arborem minorem auctus, 4—20 
pedalis, ramis junioribus angulatis mox teretibus. Foliis 
linearibus vel angustato-lanceolatis, obtusis, glabris, mem- 
branaceis obsolete-3-nerviis pellucido-punctatis, 2-44 
e.m. longis, 3—4 mm. latis. Floribus albis, solitariis axil- 
aribus, sessilibus vel brevissime pedicellatis nonnunquam 
terminalibus in ramis lateralibus. Bracteis 2, caduceis. 
Calicibus glabris, lobis ovatis marginibus fimbriatis. Petalis 
spathulatis vel laminis orbicularibus. Ovario glabro; 
fructibus quinque-locularibus. 
A glabrous shrub or small tree, varying in height from 
4 to 20 feet, the main stem up to and occasionally exceed- 
ing 3 inches in diameter, bark light brown colour and com- 
paratively thin and smooth on the upper branches, more 
or less fibrous and furrowed on the lower part of the stem. 
Juvenile branchlets at first somewhat angular, afterwards 
terete. 
Leaves alternate, linear or narrow linear-lanceolate, 
obtuse, 2 to 44 cm. long, 3-4 mm. broad. 
Flowers white, solitary in the axils of the leaves or 
occasionally terminal on the lateral branchlets, sessile or 
