136 THE TASMA.NIAN FLORA. 



enclosing, but shorter than, the calyx. Sepals about | inch long, ovate. Corolla 

 pink to nearly purple, about 2 inches long. Stigmatic lobes narrow-oblong. 

 Capsule 1-celled. Calystegia suldandla, Hook. 



Circular Head, George's Bay, Port Sorell ; also New South Wales, Victoria, 

 and New Zealand. A common coast plant in the Northern Hemisphere. 

 Considered by von Mueller to be a variety of C.sepiwm. Fl. spring and summer 



2. WILSONIA. 



Calyx of united sepals, shortly lobed. Corolla with a slender cylindrical 

 tube and spreading lobes. Ovary 2-celled, or the dissepiment partially deficient, 

 normally 1 ovule in each cell. Fruit capsular. 



A purely Australian genus, and coufined to the southern portion of that 

 distribution. 



Plant pubescent. Leaves under 2 lines, distichous... 1. W. humilis. 

 Plant glabrous. Leaves fleshy, linear, ^-1 inch ... 2. W. backhottsii. 



1. W. HUMILIS, R. Br. A prostrate, somewhat rigid, under-scrub, with 

 ascending branches, silky-pubescent (atleast in the young parts), seldom exceeding 

 1 foot. Leaves ovate, crowded and overlapping on the branches, 1-2 lines long, 

 usually distichous. Flowers solitary, terminal, sessile. Calyx about 2| lines 

 long ; lobes short. Corolla-tube rather shorter than the calyx ; lobes about 

 li line long, spreading. Anthers freely exserted (in all specimens I have 

 examined). Style long, with 2 slender branches and globose stigmas. Capsule 

 enclosed in the calyx, membranous, usually 1-seeded. 



Swanport, in salt marshes ; also in Victoria, South Australia, West Australia, 

 and New South Wales. Fl. Dec. 



2. W. BACKHOUSii, Hook. A small perennial, with prostrate or ascending 

 stems from the stock, rarely above 6 inches high, quite glabrous, leaves broadly 

 or narrowly linear, thick, fleshy, j to nearly 1 inch long. Flowers solitary, 

 sessile, axillary. Calyx about 3 lines long ; lobes much shorter, and pubescent 

 ■on the inner surface. Corolla-tube very slender, usually \ inch long in Tasmanian 

 specimens ; lobes about 1^ line long. Stamens freely exserted. Style as in 

 last, 



Swanport, Kelvedon, near George's Bay ; also extra-tropical Australia. 

 Fl. Dec. 



3. DICHONDRA. 



Sepals united towards the base oc nearly free. Corolla oampanulate, deeply 

 lobed. Ovary of 2 distinct carpels. Styles basal, free. Ovules 1 or 2 in each 

 carpel. Fruit a membranous capsule, often only one of the carpels maturing. 



A very distinct genus, of but 2 species : one found in tropical America, the 

 other widely distributed throughout tropical and most temperate districts. 



D. REPBNS, Eorst. A perennial, with a creeping rhizome and tufts at intervals. 

 Leaves mostly reniform, and notched at the apex, silky, J -2 inches diameter, on 

 long stalks. Flowers solitary, on stalks shorter than the leaves, small and often 

 hidden. Calyx silky, about 1 line long, divided nearly to the base. Corolla-tube 

 porter than the calyx ; lobes spreading, white. Stamens inserted at the orifice 

 of the tube. Carpels densely villous. 



Very common in dry pastures and sandy places. Throughout Australia and all 

 warm climates. Fl. spring and summer. 



4. CUSCUTA. 



Sepals free or united. C orolla more or less campanulate ; lobes short, 

 spreading, 4 or 5 scales, according to the number of corolla-lobes developed in 



