148 
PLANTS INDIGENOUS TO 
[Buettneriacea. 
granular indument of the ovary. T. purpurea (Gay, in Mem. Mus. vii. 452, tab. xxi. figs. 8-13) seems only 
distinguishable by the also narrower lobes of the bracteole, by the not densely downy ovary and the stipitate 
capsule; the degree of dehiscence of the anthers being modified by age and possibly also by other circum¬ 
stances. The specific limits of this species has therefore yet further to be traced in its various states. The 
otherwise also closely allied T. undulata (Steetz, 1. c. ii. 320) differs particularly in the harshness of its leaves. 
T. pauciflora (Lindl. in Append, to Bot. Reg. p. 18) and T. cogmata (Steud. 1. c. i. p. 232), although in habit 
similar to our plant, are more widely different in the characters of their floral organs. T. petalocalyx is the 
only species as 3 >et known beyond the territory of Western Australia. 
It flowers almost throughout the year. 
Tribe II. BUETTNERIEiE, Gaud. Prodr. i. 484. 
Petals conspicuous. Stamina and Staminodia connate near or towards the base. 
Anthers often didymous. 
C0MMERS0NIA. 
Forst. Cliaract . Gener . 43, t. 22. 
Calyx five-cleft, valvate in aestivation, ebracteolate. Petals sessile, dilated and indexed at the 
base, ligulate at the summit, disconnected with the staminal tube. Staminodia ternately interjacent 
between the fertile filaments , the middle one ligulate. Fertile filaments 5, very short, opposite to the 
petals, bearing a solitary anther with divergent cells, which opens by extrorse longitudinal dehiscence. 
Ovary sessile, five-celled. Ovules 3-6 in each cell, ascending in two rows along the inner angle of the 
cell, anatropaL Styles short, setaceous, coherent, finally secedent. Stigmas very minute. Capsule 
echinate with slender fasciciilate-hispidulous bristles , five-valved, opening by loculicidal dehiscence. 
Seeds 1-4 in each cell, strophiolate. Embiyo straight, in the axis of a fleshy albumen. Cotyledons 
flat. Radicle cylindrical, inferior. 
Shrubs and trees of East and West Australia, Oceania and India, more or less tomentose. Leaves 
alternate, broad, variously toothed, sometimes sliort-lobed. Stipules narrow, deciduous. Flowers in 
simple or paniculate cymes. Petals small, white, pink or rarely bluish.— Gcertn. de Fruct. et Semrn. 
ii. 79, t. 94; Endl. Gen. Plant. 997. 
This genus differs from Rulingia principally in the number of staminodia, from Hannafordia 
chiefly in the absence of a hypocalycine bracteole, in divergent anther-cells and in a five-celled bristle¬ 
bearing capsule. 
Commersonia Fraseri, Gay, in Mem. du Museum cFIEstoire Nat. x. 215, 1. 15; Steetz, in Lehm. 
Plant. Preiss. ii. 359. 
Shrubby, arborescent; leaves verging into a cordate, orbicular, ovate or ovate-lanceolate form, serrate- 
or repand-crenate, lobeless or short-lobed, usually acuminate, slightly oblique at the base; panicles cymose, 
many-flowered; calyx inside smooth or glabrescent; petals glabrous; their ligule longer than the clasping 
basal portion; staminodia glabrous, as long as or longer than the calyx, all cuneate-spathulate, long - and 
7iarrom-ung\ticulate, the middle ones the largest and deltoid at the base; capsule clothed with hispid bristles , 
imperfectly fire-winged towards the vertex; valves at the axis hairy; seeds black, ovate-globose; stropliiole 
minute, obverse pyramidal, livid, hardly lobed; cotyledons orbicular, as long as the radicle. 
On the banks of the Genoa River, also along watercourses towards Mount Imlay. In various parts 
of Is ew South Wales, extending northward as far as the Hastings River, descending to the vicinity of the 
coast near Twofold Bay. 
