572 
Li. MYRTACEJE. 
2-celled, versatile or attached by the base, the cells opening in longitudinal slits, 
or rarely in terminal pores. Ovary inferior or rarely almost superior, but 
enclosed in the calyx-tube, sometimes 1 -celled, with a placenta attached to the 
base or adnate to one side, more frequently 2 or more celled, with the placentas 
in the inner angle of each cell, very rarely 1 -celled, with 2 parietal placentas. 
Style simple, with a small or a capitate or peltate, very rarely lobed stigma. 
Ovules 2 or more to each placenta, in 2 or more rows, or very rarely solitary, 
erect pendulous or laterally attached, anatropous or amphitropous. Fruit inferior, 
adnate to the calyx-tube, and crowned by the persistent limb, or marked by its 
scar when deciduous, or very rarely half or almost wholly superior, and sur- 
rounded at the base by the persistent calyx-tube, either capsular and opening 
loculicidally at the summit, in as many valves as cells, or indehiscent, dry, and 
1-seeded, or succulent and indhiscent. Perfect seeds usually very few or solitary 
in each cell, even when the ovules are numerous, or rarely numerous and perfect ; 
teeth either thin and membranous, or crustaceous, fleshy or bony. Albumen none 
or very scanty near the hilum. Embryo straight or variously curved, fleshy, with 
minute cotyledons at one end, or with large, flat, or variously folded cotyledons, 
or with thick fleshy distinct or consolidated cotyledons, and an exceedingly short 
radicle, or rarely apparently homogeneous, the cotyledons inconspicuous before 
germination. Abortive ovules in many capsular genera, enlarged without being 
fertilized, and simulating the seeds, but of a hard, nearly homogeneous, woody, 
or granular consistence.— Trees or shrubs, very rarely undershrubs. Leaves 
simple, entire or rarely obscurely crenate-toothed, opposite or less frequently 
alternate, more or less dotted in all but the Lccythulece, with small resinous 
glands, either pellucid or black and superficial, often scarcely visible when the 
leaf is thick. Stipules none, or rarely very minute and fugacious. Flowers 
solitary or in racemes panicles or cymes, axillary or apparently terminal from the 
terminal bud not growing out till after the flowering is over. Bracts solitary at 
the base of the peduncles, or forming an imbricate involucre from the abortion of 
the lower flowers. Bracteoles 2 at the base of or on the pedicel, sometimes very 
small or abortive, and often exceedingly deciduous. 
The fleshy-fruited genera of the Order are widely spread over the tropical regions both of the 
New and the Old World, including many of the largest forest trees, and are, in Australia, 
almost limited to the tropics, a very few species extending into N. S. Wales, and only one into 
Victoria. The capsular genera are either entirely or chiefly Australian ; four of the larger 
ones, represented by a few species in New Caledonia and the Indian Archipelago, one, 
Xanthostemon, represented by more species in New Caledonia than in Australia, two small 
ones are in New Caledonia, and not yet found in Australia, one, Eucalyptus, is represented in 
New Guinea, Timor, if not in the Moluccas, but is not in New Caledonia, another, Metrosi- 
deros, is more abundant in the Pacific Islands than in Australia, and extends also to the 
Malayan peninsula, and in anomalous forms (perhaps not strictly congeners) to S. Africa and 
S. America. Two of the widest-spread genera, Leptospermum and Metrosideros, are also in New 
Zealand. — Benth. 
Tribe I. Cham®laucie®. — Ovary 1 -celled, with a single placenta. Fruit 
indehiscent, dry, with 1 or rarely 2 seeds. Shrubs often heath-like. Leaves 
small. Flowers solitary, or very rarely 2 together in the axils of the leaves or 
bracts, scattered along the branches, or forming a terminal head. 
Subtribe I. Euchamaelauciea 5 . — Stamens twice as many as petals, with intervening 
staminodia rarely wanting, or 4 times as many as petals, without staminodia, the filaments more 
or less distinctly united in a ring at the base. Ovules 2 to 10, attached to an excentrical basal 
placenta, or in 2 roics, on a short lateral placenta. Embryo, where known, consisting of a thick 
radicle, the shape of the seed with a slender neck lying on the summit, apparently entire or with 2 
minute cotyledons at the end. 
Stamens 10, alternating with as many staminodia (very minute or wanting 
in one species of Darwinia and one of Verticordia). 
Calyx-lobes 5, subulate, entire 2. Homoranthus. 
Calyx-lobes 5, broad, entire or shortly ciliolate. Anthers globose or 
didymous, opening in terminal pores or short slits. Style usually long . 1. Darwinia. 
Calyx-lobes 5 or 10, deeply divided into subulate, plumose, or hair-like lobes 3. Verticordia. 
