48 THE TASMANIAN FLORA. ^ 



lamina reniform or semi-lunate, 2-4 lines diameter. Flowers few, terminal, j inch 

 •diameter, pink or whitt. Sepals quite glabrous. 



Very common ; also South and East Australia and New Zealand. Fl. spring 

 and summer. 



6. D. PELTATA, Sm. The ordinary form not diSering in general details from 

 D. auriculata, except that the sepals are copiously hairy and the stem leaves are 

 sometimes attached by the lower surface. 



Very com.mon, chiefly in pasture land ; also throughout South and East 

 Australia. Fl. spring and summer. 



Var. gracilis. Slender, and climbing amongst undergrowth. D. gracilis, 



H. 

 Y Sir. folidsa. Stem short, leaf laminas very broadly reniform. D.foliosa, 

 H. 



7. D. MENZIESII, R. Br. Stem.s very long and slender, tangling in the under- 

 growth. Leaves all dispersed on the stems, at least in the mature plant, 

 orbicular peltate, 2-3 lines diameter, on long slender stalks. Flowers f inch 

 diameter, pink or white, few in a loose terminal panicle or raceme. D. platichoni, 

 H. (included). 



Clarence Plains, George's Bay, North Coast ; also extra-tropical Australia. 

 Fi: Oct. 



Order XXX.—HALOBAGE^. 



Pistil quite inferior, of 2-4 1-seeded carpels, blended, but the ovarian chambers 

 usually distinct. Sepals 2-4, sometimes absent. Petals tiie same. Stamens 

 usually 2-8. 



A world-wide order. 



Plant terrestrial. 



Leaves dispersed along the stem, sessile or nearly 



so ... ... ... ... ... ... ... 1. Saloragis. 



Leaves radical, long-stalked ... ... ... 4. Gunner a. 



Plant aquatic or creeping in mud. ^5^ 



Leaves opposite, stalked, entire ... ... ... 5. Callitriche. 



Leaves alternate with many linear lobes ... ... 2. Meionectes. 



Leaves whorled or opposite and sessile, if alternate, •• 



entire ... ... ... ... ... ... 3. Myriophyllum. 



1. HALORAGIS. 



Sepals and petals usually 4. Stamens 8. Fruit the indurated pistil. Rough 

 herbs. 



Widely distributed in the Southern Hemisphere. 



Leaves lobed or linear... ... ... ... ... 1. S. heterophi/Ua. 



Leaves broad, opposite. 



Flowers minute 2. if. micrantha. 



Flowers 1-2 lines long. 



Plant depressed, fruit polished ... 5. S. depressa. 



Plant erect, fruit tuberculate. 



Leaves broad, cordate 3. H. teucrioides. 



Leaves narrow, narrowed at the base ... 4. S. tetragyna 



1. H. HETEBOPHYLLA, Brong. Erect, 4-8 inches. Leaves opposite, or some- 

 times altei'nate, variable, but mostly linear, with few more or less prominent 



