1192 
XCYI. LABIAT2E. 
6. DYSOPHYLLA, Blume. 
(Leaves fetid.) 
Calyx equally 5-toothed. Corolla with a short tube ; the limb of 4 equal 
or nearly equal lobes. Stamens 4, nearly equal, exserted, the filaments 
bearded ; the anthers small, terminal, nearly globular, 1 -celled. — Herbs. Leaves 
opposite or whorled. Flowers in dense false-whorls, forming close cylindrical 
spikes. 
The genus comprises several tropical Asiatic species, including among them the only 
Australian one. 
1. D. verticillata (leaves in whorls), Bentli. ; D.C. Prod xii. 157 ; FI. 
Austr. v. 81. A glabrous or somewhat pubescent herb, decumbent at the base 
or floating in water, ascending to 1ft. or more. Leaves in whorls of 4 to 6 
or rarely more, sessile, linear or linear-lanceolate, entire, with recurved margins, 
1 to 2in. long or even more. Flowers very small and numerous, the false- 
whorls crowded in dense cylindrical spikes of f to 2in., the tips of the bracts 
subtending the - false-whorls sometimes appearing in the young spikes in 4, 
6 or 8 rows. Calyx softly villous, scarcely one line long when in fruit, and 
much smaller in the flower. Corolla-tube shorter than the calyx, the lobes as 
long as the tube. Stamens shortly exceeding the corolla-lobes, the filaments 
bearded with reddish purple hairs. 
Hab.: Mitchell River, Gulf of Carpentaria, Leichhardt, the common form with glabrous 
stems and foliage; Edges of waterholes, Rockingham Bay, Dallachy, a pubescent variety 
also found in India, but not so common as the glabrous one ; Gilbert River, F. v. 31. 
The species is widely spread over East India and the Archipelago. Thwaites is probably right 
in uniting with it as varieties D. crassicaulis, Benth., and D. tetrapliylla, Wight, Ic. t. 1444. — 
Bentli. 
7. MENTHA, Linn. 
(The Greek name for Mint.) 
Calyx regular or slightly 2-lipped, 5-toothed. Corolla-tube not at all or 
scarcely exceeding the calyx ; limb 4-lobed, the lobes all equal and spreading 
or the upper one broader and notched. Stamens, 4, equal, erect, distant ; 
filaments glabrous ; anthers with 2 parallel cells. Style shortly bifid. Nuts 
smooth. — Herbs, usually copiously dotted and strongly scented. Flowers 
small, in false-whorls usually dense rarely few flowered, all axillary or in 
species not Australian, forming terminal spikes, with the floral leaves reduced 
to bracts. Bracts within the false-whorls minute, or rarely subulate and as 
long as the calyx. 
The genus is chiefly extratropical and most abundant in Europe and Northern Asia, with one 
or two North American species scarcely different from Asiatic ones, so also the very few tropical 
Asiatic forms are but slight modifications of common northern ones. The Australian species 
are all endemic. They appear as difficult to define by positive characters, and to pass into each 
other as gradually as the species allied to 31. arvensis in the northern hemisphere. They all 
belong to the group with axillary false-whorls. — Benth. m 
Leaves mostly toothed. Flowers less numerous, the corolla fully o lines 
long. Pedicels short 1.3/. grandiflora. 
Leaves all or mostly entire. Pedicels very short (except where the flowers 
are very few). 
Flowers numerous, rather large. Calyx-teeih subulate. Corolla under 4 
lines long. Leaves lanceolate 2. 31. australis. - 
Flowers few in the false-whorls and small. Calyx-teeth short, densely 
hairy inside. Leaves ovate to oblong-linear 3. 3/. satureioides. 
1. IVX. grandiflora (flowers large), Bentli, in Mitch. Prop. Austr. 362 and in 
D.C. Prod. xii. 698 and FI. Austr. v. 82. Softly pubescent. Leaves petiolate, 
ovate, mostly toothed, ^ to fin. long. False-whorls all axillary, loose and 
not mmy-flowered, but the pedicels all shorter than the calyx. Calyx about 
