580 
LI. MYRTACEiE. 
[Calythrix. 
5. C. laricina (Larch-like), B. Br.; Bentli. FI. Austr. iii. 52. A much- 
branched shrub, spreading, and scarcely lift, high in barren open places, 
attaining 6 to 7ft. in moist situations. Leaves linear, subulate, slender, 
triquetrous, mucronate, 2 to 8 lines long, crowded on the smaller branchlets. 
Flowers small, nearly sessile, crowded below the ends of the branches. Bracts 
truncate or shortly acuminate, ciliate, much shorter than the calyx-tube. Calyx- 
tube about If lines long, pubescent or nearly glabrous, the free part scarcely 
contracted ; lobes at first broadly lanceolate, ciliate, not so long as the tube, the 
short awn scarcely exceeding the cilia, after flowering the lobes are longer and 
taper into a more prominent awn. 
Hab.: Islands of the Gulf of Carpentaria. R. Brown. 
5. HOMALOCALYX, F. v. Muell. 
(Calyx smooth.) 
Calyx-tube cylindrical or turbinate, the upper free part short and broad ; lobes 
5, petal-like, entire, deciduous. Petals 5, entire, deciduous. Stamens indefinite, 
few or many, free, deciduous, the inner ones shorter, filaments filiform ; anthers 
with two parallel cells opening longitudinally, the connective thickened into a 
terminal gland. Ovary 1-celled, with 2 ovules on a short basal excentrical 
placenta. Style filiform, glabrous with a small capitate stigma. Fruit . . . — 
Heath-like glabrous shrubs. Leaves scattered (not opposite), usually crowded, 
small, entire. Flowers nearly sessile along the branches, solitary in the axils of 
the leaves. Bracteoles broad, usually persistent. 
A small genus, limited to Australia, allied to Lhotzkya (a South Australian, Victorian, and 
West Australian genus, but so far not met with in Queensland) in its petals and stamens, and in 
some measure to Thryptomene in the ovary, differing from both in the deciduous calyx-lobes. 
The ripe fruit is unknown, but in the farthest advanced state that I have seen there is no 
tendency to the hardening of the endocarp as in Thryptomene. — Bentli. 
Leaves linear, mucronate. Calyx-tube cylindrical, lobes and petals acute. 
Stamens 9 to 15 1 . H. ericaus. 
Leaves oblong-triquetrous, obtuse. Calyx-tube broadly turbinate, lobes and 
petals broad, obtuse. Stamens 20 to 30 2. H. polyandrns. 
1. H. ericaeus (Heath-like), F. v. M. in Hook. Kew Journ. ix. 309; Bentli. 
FI. Austr. iii. 56. A small shrub, erect, with slender virgate branches, or 
spreading and almost procumbent. Leaves crowded, linear, rigid, acutely 
triquetrous or concave, mucronate, f to fin. long. Flowers nearly sessile, or 
shortly pedicellate in the upper axils. Bracteoles broad, much shorter than the 
calyx-tube, veined, scarious only at the edges. Calyx-tube oblong-cylindrical, 
If line long in flower, longer afterwards, the free part short ; lobes lanceolate, 
acute, about 1 line long, very deciduous. Petals similar to the calyx-lobes, but 
rather longer. Stamens 9 to 15 ; anthers small. Ovules 2, collateral, erect on a 
short basal excentrical placenta, which does not appear to be continued beyond 
the ovules. Young fruit 1-seeded, enclosed in the enlarged truncate calyx-tube. 
Thryptomene homalocalyx, F. v. M. Fragm. iv. 68. 
Hab.: Islands of the Gulf of Carpentaria, R. Brown. 
2. H. polyandrus (stamens numerous), F. v. M. Herb ; Bentli. FI. Austr. 
iii. 56. Leaves erect, oblong, triquetrous, very obtuse, If to 2 lines long. 
Flowers on very short pedicels in the upper axils. Bracteoles persistent, very 
broad, keeled, scarious, forming a truncate cup enclosing the calyx. Calyx-tube 
very short, broadly turbinate ; lobes orbicular, nearly If line diameter. Petals 
about the same, and apparently falling off with them. Stamens 20 to 30, 
crowded almost into a single row ; the filaments all short, but the inner ones still 
shorter and more indexed ; anthers small with a rather large gland to the 
