42 Some hitherto unknown Australian Plants. 



Petals pink, about 5 lines long, persistent when faded. Fila- 

 ments considerably shorter than the corolla, of unequal 

 length, white, capillary. Anthers sagittate-ovate, white, fixed 

 between their lobes, several times shorter than the filaments. 

 Pollen yellow. Stigmas white, filiform, about one line long, 

 adscendent. Capsule ovate or nearly globose, J inch long. 

 Seeds numerous, with their white funicles affixed to the 

 basilar placenta, shining, black, perfectly polished, lenticular, 

 measuring | of a line. 



MYRTACEjE. 



Calycothrix arborescens. 



Glabrous ; branchlets numerous, slender, spreading ; 

 densely torulous-cicatrisate ; leaves very small, densely 

 imbricate, cordate- or rhomboid-lanceolate, acuminate, 

 with broad sessile base, above flat, beneath convex and 

 somewhat keeled ; stipules exceedingly minute, subulate, 

 much shorter than the cicatrix, and to its centre inserted ; 

 flowers polyandrous ; bracteoles free, orbicular- cordate, 

 acuminate, not much longer than the pedicel, but nearly 

 three times shorter than the cylindrical calyx-tube ; 

 lower portion of the calyx-lobes almost ovate, upper part 

 drawn out into a long acumen, but without a proper 

 bristle, somewhat scabrous, not reaching beyond the 

 lanceolate pointed white petals. 

 In arid bushy plains towards the sources of the Roper and 

 Limmen Bight rivers. 



A tall, most beautiful shrub, sometimes forming a tree 

 fully 25 feet high. Leaves, in drying, extremely deciduous, 

 those of the younger branchlets f-1 line, those of the older 

 ones 1-2'" long, all spirally arranged, their fall rendering the 

 thin branchlets like those of C. microphylla, strangely sculp- 

 tile by the innumerable little grooves of the cicatrices. Brac- 

 teoles greenish, scarcely longer than one line. Tube of the 

 calyx tapering towards the base, yet not towards the apex; seg- 

 ments of the limb pale yellowish- green, 2-2V long. Anthers 

 roundish- cordate, terminating in two glands. Style longer 

 than the white filaments. 



The nearest allied species is Cal. microphylla, A. C. In 

 C. arborescens and the following species is a clear transit to 

 Lhotzkya observable, which genus may well be united with 

 Calycothrix. 



