Convolvuiacea.'] FLORA OF TASMANIA. -77 
disperma. — Suffruticuli humiles, erecti v. prostrati, sericeo-pubescenten v. glabra! 't . 
bricatis, parvis ; floribus a iff, sessilibm. 
A singular genus, some of the species of which resemble Trankeu'w in many important characters besides habit ; 
all are natives of the south and south-western coasts of Australia and the north shore of Tasmania.— Small, woody 
or herbaceous, prostrate or suberect, glabrous or silky plants, with very small, scattered or imbricating haves. 
Flowers small, solitary, sessile. Calyx ebracteate, urceolate, five-lobed and five-angled. Corolla funnel-shaped, 
with five imbricating lobes. $ta„ini* li\e, included or exserted. Ovary two-celled, with one erect ovule in rath 
cell, or one-celled with two ovules. (Named in honour of John Wilson, author of a Synopsis of British Piute.) 
1. "Wilsonia humilis (Br. Prodr. 490) ; suffrutex sericeo-tomentosus, ramosissimus, ramis prostratis 
diffusis, foliis dense distiche imbricatis crassiusculis cyrnbiformibus, floribus axillaribus, calyce tubnlos.., 
corolla? tubo calyce tequilongo lobis oblongo-linearibus, staminibus fauce vix exsertis. — ( 
Prodr. ix. 450. Frankenia cymbifolia, Hook. Ic. PI. t. 265. {Gunn, 661.) 
Hab. Great Swan Port, Backhouse. 
Disthib. South and south-western coasts of Australia, from Victoria to Swan River. 
A small, prostrate, branched, woody, silky plant, with long, distichously -branched stems, covered with close- 
set, distichous, imbricating leaves.— Leaves boat-shaped, very concave, blunt, silky on both surfaces. 11 line long. 
Mowers small, axillary, sessile. Calyx tubidar, with six short, blunt taetfa . silky inside and out. Com la sahcr- 
shaped ; tube as long as the calyx; lobes five, linear-oblong, with concave tips. Anther* scarcely exserted. (h-nry 
flagon-shaped, one-celled, with two erect ovules. Style jointed on to the ovary, divided at the middle into two 
slender, capitate arms. 
2. Wilsonia Backhousiana (Hook. fil. Lond. Journ. Bot. vi. 2?r») ; glaberrima, raulc prostrato 
ramoso, ramis ascendentibus, foliis carnosis linearibus subacutis, floribus foliifl longioribus, calyce obh.ugo 
corolla? infundibuliformis tubo calyce bis longiore, lobis lanceolatis acutis, staminibus longc exsertis, ovano 
biloculari. [Gunn, 662.) 
Hab. Kelvedon, Great Swan Port, Story, Backhouse. 
Distrib. South coast of Australia, from Port Phillip to Swan River. 
A very different plant from W. humilis, and perhaps deserving of being considered another genus, but until 
the other species of Wilsonia are investigated this cannot be determined; it differs from W. humilis in habit and 
foliage, in the short, oblong calyx, in the long tube of the funnel-shaped corolla, which has long, lanceolate lobes, 
in the long, exserted filaments, and bilocular ovary.— A perfectly glabrous plant. Hoot woody. Stems very nume- 
rous, flexuose, much diffuselv-branched. Branches a span long. Leaves fleshy, linear, |-§ inch long, blunt or 
subacute. Flowers Longer than the leaves. Calyx quite glabrous externally, with five subulate teeth, bended m- 
temally. Ovary generally bilocular, but I think the septum is not always complete. Anthers and stigmata black. 
—I have seen Melbourne specimens (from Adamson) with much shorter, almost oblong leaves. 
Gen. IV. DICHOXDRA, Font. 
O^xB-partit™. Corolla snbrotata, Umbo 5-partito piano. Ovaria 1, 2«pen«» j stylis 2 basilaribus ; 
stigmatibus capitatis. Fructus utriculi 2 monospermi.-Herba parvula, pubescent v. jeruwi; caule pro- 
strato ; foliis alternis.reniformibuscordato-rotundatisve; pednncoHs asMarOui, **t<m* t m#»U; Hon- 
bus inconspicuis, flavis. 
Dichondra repens, the Australian (and probably the only) species of the genus, is a small, creeping often tufted 
- ^0 inches long; alternate, petiolate, cordate, or 
pubescent, villous or silky herb, with slender, prostrate 
reniform leaves, \-\ inch broad, round or notched at the apex, quite entire.- 
about as long as the petioles, one-flowered. Jtan yellow, .mail. Calyx five-parted. Corolla rotate; limb about 
-Peduncles sobtary, axillary, bractless, 
