78 FLORA OF TASMANIA. [Stackhousiete. 
filaments oblong. Style three- (rarely four-)cleft at the summit. Fruit obconic, girt at the middle by the persistent 
calyx-lobes. Cocci as in P. elliptica. 
6. Pomaderris ericaefolia (Hook. Journ. Bot. i. 257) ; fruticulus apetalus erectus ramosus 
scoparius velutino-pubescens v. villosus, ramulis villosis, foliis parvis confertis patulis lineari-oblorigis 
obtusis breve petiolatis superne scabridis marginibus ad costam revolutis, floribus parvis in cymas abbre- 
viatas paucifloras axillares aggregatis. — Fl. N. Zeal. i. 46. {Gunn, 231.) 
Hab. Mersey Biver, Gunn. 
Disteib. Northern Island of New Zealand. 
I have very few Tasmanian specimens, but they are absolutely identical with the New Zealand plant, which I 
have gathered abundantly.— A small, erect shrub, 2-3 feet high, with erect, fastigiate, broom-like branches, densely 
villous with spreading hairs. Leaves i-| inch long, abundant, linear or linear-oblong, blunt, scabrid abo-.e, vil- 
lous on both surfaces, most so below, margins revolute generally to the costa ; petiole very short. Stipules subulate, 
almost filiform. Mowers in small, axillary, few-flowered cymes, which are scarcely longer than the leaves, and very 
abundantly produced along the branchlets. Calyx villous. Petals none. Stamens exserted. Antlers shortly 
oblong. Style three-cleft. Fruit unknown.— In New Zealand specimens the leaves become more expanded, their 
margins only recurved, and exposing the woolly under surface of the leaf. Fenzl (Plant. Hugel. p. 23) says of 
this that it is too nearly allied to P . pliyliccefolia, Lodd. (Bot. Cab. 120). 
Nat. Ord. XXV. STACKHOUSIE^E. 
The affinities of this curious Order are considered to be with Eup/wrbiacece on the one hand and 
Celastrinea on the other; differing from Eup/wrbiacea in the erect seeds, hermaphrodite flowers, and inde- 
hiscent carpels. From Celastrinea they differ in having stipules, in the claws of the petals being united, 
and in the want of a disc : these characters seem to me of less importance than those separating Stack- 
housiece from EuphorbiacecE, as they are aU found in the Order Mamnea, except the absence of a disc, 
which is often present in Euphorbiacea. About fifteen or twenty Australian species are known (but these 
are so variable that they will probably be reduced), chiefly natives of the south-west coast, where the curious 
genus Tripterococcus (of which there are four species) occurs, along with six or seven StacMousiea. A 
few of the latter genus are tropical; one species of StacMousia is found in New Zealand, and there is 
perhaps also a Philippine Island one, of which however I have seen very indifferent s 
Gen. I. STACKHOUSIA, Sm. 
Cahjcis tubus ventricosus; limbus 5-partitus. Petala 5, unguiculata, linearia, unguibus liberis v in 
tubum coahtis, limbo patente. Stamina 5, calyce inserta; filamentis 2 alternis longioribus. Ovarium 
3-5-lobum, 3-5-loculare; ovulis solitariis, erectis. Styli 3-5, in unum apice 3-5-fidum coaliti. Fructus 
3-5-coccus; cocas mdehiscentibus, crustaceis; semen solitarium, erectum. Embryo in axi albuminis car- 
nosi erectus, radicula infera.-Herb* ; foliis linearis obovatisve, integerrimis, alternis; stipulis parvis; 
floribus spicatis. r * 
Of this genus there are four Tasmanian species, some of which are far from well marked, and one of 
them is very common in open, dry places. AU form erect herbs, with stems branching from the root only.-Leaves 
rather fleshy, alternate, sessile, stipulate, entire, hnear or spathulate. Fibers sessile, forming dense or lax spikes 
at he ends of the branches, bracteolate. Calyx small, short, broadly campanula, five-lobed. Petals five, seated 
on the throat of the calyx, with long, erect, free or eonnate claws, and small spreading limbs. Stamens five two 
