578 
LI. MYRTACE^E. 
[Calythrix. 
more frequently below the ends of the branches. Bracteoles persistent, rigid, 
continuous with the thickened pedicels, and often united at the base into a 
turbinate cup, and in the free part overlapping each other and enclosing the base 
or nearly the whole of the calyx-tube. 
The genus is limited to Australia. It has been divided by some according to the presence or 
absence of stipules, but this character is wholly unavailable in practice. The stipules, when 
present, are rudimentary only, and so minute and fugacious, that it is often impossible to 
discover them in some specimens of species where they are occasionally the most conspicuous. 
Other botanists, again, have, from the number of stamens, distributed the species into 
decandrous and icosandrous, or even given in the diagnosis stamens 8, 10, 20, or about 40, but 
I have found them to vary in this respect in all the species. The majority have above 30 
stamens, whilst in the few supposed to be decandrous, the number varies from 7 to about 15, and 
are not arranged in any regular relation to the sepals and petals, as in the genera with definite 
stamens. The colour of the flowers appears to be constant in individual species, yellow in some, 
pink or lilac in others, white in C. tetragona, but not of sufficient importance to be available for 
sectional grouping. The most tangible character I have found lies in the shape of the calyx- 
tube and its relation to the ovary, although it is often difficult to verify it without a careful 
analysis, and, in habit, the majority of the species are very much alike. — Benth. 
A. Calyx-tube slender, slightly fusiform and adnate to the ovary below the middle, the upper 
slender part terete, free, enclosing the base of the style, which is usually persistent, the staminal 
disk forming a ring round it but free from it. 
Bracteoles much shorter than the calyx-tube, connate, from quarter to half 
their length. 
Leaves from under 4 line to about 1 line long, minutely ciliate and usually 
acute and prominently keeled. Petals narrow, acute 1. C, microphylla. 
Leaves mostly about 2 lines long, acutely keeled and often minutely ciliate 2. C. longirlora. 
Leaves slender, semiterete, 2 to 4 lines long, crowded, not ciliate . . . 3. C. leptophylla. 
B. Calyx-tube slender, slightly fusiform and adnate to the ovary beloiv the middle, the upper 
slender part terete, solid inside, terminating in a short broadly campanulate or turbinate free 
portion. 
Flowers white, usually in terminal leafy heads or short spikes 4. C. tetragona. 
C. Calyx-tube pubescent, oblong, more or less contracted above the ovary, the free part short; 
lobes with very short awns or points. 
Calyx-tube nearly glabrous, line long, slightly contracted above the ovary. 
Leaves very fine, 2 to 3 lines long 5. C. laricina. 
1. C. microphylla (small-leaved), A. Cunn. in But. May. under n. 8323 ; 
Benth. FI. Austr. iii. 49. A tall shrub, or, on banks of streams, a small 
tree, with numerous small branchlets covered with imbricated leaves. 
Leaves thick and triquetrous, from under § line long and almost obtuse, 
to above 1 line long and acute, more or less ciliate with very short rigid 
hairs, or when luxuriant quite glabrous. Flowers (of a rich red ?) on thick 
pedicels of about a line in the upper axils of the short branchlets, forming showy 
corymbose or oblong leafy panicles. Bracteoles about 2 lines long, setaceous- 
acuminate, connate at the base. Calyx-tube scarcely 3 lines long when first 
flowering, but lengthening to 5 lines, slightly fusiform below the middle, the 
slender upper portion free, enclosing the style ; lobes ovate, acuminate, wdth hair- 
like awns from half the length of to longer than the petals. Petals narrow, 
acute, 4 to 5 lines long. Stamens numerous ; connective-gland small. — Schau. 
Myrt. Xeroc. 89 ; C. exstipulata, DC. Prod. iii. 208, according to Schauer ; 
C. cupressifolia, A. Rich. Sert. Astrol. 41, t. 16 C. ( cupressoides, A. Rich. l.c. 43). 
Hab.: Islands of the Gulf of Carpentaria, R. Brdicn. 
2. C. longiflora (flowers long), F. v. M. Fratjm. i. 12 ; Benth. FI. Austr. iii. 
49. A tall handsome shrub, quite glabrous. Leaves oblong-linear or cuneate, 
obtuse or shortly mucronate, l\ to 2 lines long, or nearly 3 lines on luxuriant 
shoots, rigid with acute denticulate-ciliate margins, and a very prominent acute 
keel. Flowers large (pink ?) on short thick pedicels, in the axils of small floral 
leaves, forming terminal heads on the short branchlets. Bracteoles about 14 line 
