128

PLANTS INDIGENOUS TO

[. Rutacece.

pale-yellow, more or less shining, upwards considerably dilated, nerveless. Placenta rhomboid-ovate,somewhat fleshy, or membranous at the margin, resembling the strophiole of many seeds, often only about§ line long, livid, bearing two ovules. Seeds about 1| line long, oblique-ovate, turgid, sometimes a littledotted. Testa crustaceous. Endopleura membranous, pale. Embryo slender, as long as the albumen.

In flower during the spring.

In close proximity of this plant is to be placed the Eriostemon serralatus (F. M. Fragm. Phytogr.Austr. i. 4), found in dense forest vallies at the upper tributaries of the Buneep River. It differs chiefly in itsgreater length of leaves and in the oblique-ovate acute carpels, which are larger and terminated by a long-straight rostrum. Notwithstanding these discrepancies, which can be accounted for by the influence whicha particularly wet locality may exercise on the plant, it would have been united on this occasion with E.Ilillebrandii, if its flowers and seeds were known. It attains a height of fully 10 feet.

All the flowers of E. Ilillebrandii examined by us have the usual number of floral parts; but Dr. J.Hooker observed the calyx to be in some instances four-cleft, the number of petals then to be four, and thatof the stamens eight. In its reduced number of ovaries this species imitates E. grandiflorus and E. Drum-mondi, from Western Australia .

The species received its name in appreciation of many services rendered by Dr. Will. Hillebrand, forpromoting the investigation of the South Australian flora.

Eriostemon umbellatus, Twrcz. in Bullet, de la, Soc. Invper. des Nat. de Moscou, xxii. 2, 15;F. M. Fragm. Phytogr. Austr. i. 104; Phebalium salicifolium, Adr. de Juss. Mem. Soc. Hist. Natur. ii. 1. 12,J\ 1; P. phylicifolium, F. M. in Transact. Viet. Inst. i. 32.

Branchlets downy; leaves lanceolate- or oblong- or elongate-linear or oblong or linear, coriaceous, bluntor retuse, entire or remotely denticulated, beneath very thinly grey velvet-downy, revolute at the margin,decurrent into the petiole; flowers axillary, pedunculate, corymbose or umbellate, rarely solitary; pedicelsabout as long as the flowers, bracteolate at the base; teeth of the minute calyx deltoid; petals yellow,glabrous, glandulously dotted; filaments setaceous, longer than the corolla, glabrous; anthers inappendiculate;style long, smooth, capillary; stigmas united, very minute; carpels subrhomboid, short-rostrate; valves of theendocarp forming at the junction a deltoid tooth; placenta often several times shorter than the seed, fleshy;seeds brown-black, polished; cotyledons nearly as long as the radicle.

On Mount William, on the Munyang mountains, on the highest rocks of the Cobboras, on MountWellington, on the mountains at the sources of the Mitta Mitta mountains, at an elevation from 4000 to0000 feet; in New South Wales along rocky gullies near Botany Bay .

A shrub, very tall and erect in lowland localities, dwarf and diffused, yet robust in alpine situations.Branches terete. Branchlets clothed with starry downs. Leaves in the lowland variety generally from 1J-2Jinches long, in the alpine form from J-l inch long, shining above, ashy-grey beneath on account of itstegument, or in age fully glabrescent. Corymbs or umbels simple or compound. Peduncles angular, 1 inchlong or oftener shorter, in various degrees starry-downy. Pedicels somewhat lepidote or downy, or, particu-larly in age, glabrous, angular, hardly upwards thickened, provided at or near the base, and sometimes alsotowards the summit, with partially puberulous lanceolate-ovate or linear fugacious bracteoles. Calyx not sodeeply cleft as in most other species. Petals narrow-lanceolate, about 2 lines long, valvate in .estivation,saturate- or pale-yellow, subsessile. Sepaline filaments considerably, petaline ones slightly longer than thecorolla. Anthers yellow, ovate-cordate, versatile, about J line long, with introrse dehiscence. Style about1£ line long. Stigmas hardly expanding. Gynophor exceedingly short. Ovaries 5, coherent, smooth, orin the alpine variety velvety. Carpels hardly 2 lines long, seldom all developed, one- rarely two-seeded,having- their beak quite lateral in consequence of the broad expansion of the vertex forming a prominentinner angle, transversely veined, sometimes downy, rarely without rostrum. Endocarp pale-yellow, shining;its valves more renate than cuneate. Placenta about § line long, roundish, somewhat fleshy, livid, or at