Materials for a Flora of the Malayan Peninsula. 



67 



valvate or imbricate, sometimes entire or closed in bud. Petals inserted 

 on a disk surrounding the cavity -of the calyx, equal in number to tlie 

 calyx-lobes and alternate with them, rarely 0. Disc lining the calyx- 

 tube, staminiferous at the margin. Stamens usually numerous, inserted 

 with the petals in several rows, rarely definite and alternate with the 

 petals ; filaments free or more or less coherent at the base or in bundles 

 opposite the petals ; anthers small roundish, with parallel cells bursting 

 longitudinally. Ovary inferior or ^-inferior, crowned by a fleshy disk, 1- 

 celied with 1 or more ovules, or more usually 2-many-ceIled with many 

 ovules ; placentation axile (parietal in Rhodamnia) ; style terminal rarely 

 lateral, smooth or bearded at the summit ; stigma undivided. Fniit 

 usually crowned by the calyx-limb, either 1-celled and 1-seeded by 

 abortion, or 2-many-celled with loculicidal dehiscence ; or baccate and 

 indehiscent with the cells many-seeded or 1-seeded by arrest. Seeds 

 angular cylindric or compressed ; testa hard or membranous, sometimes 

 winged ; albumen ; embryo straight curved or spirally twisted, cotyle- 

 dons usually short and obtuse sometimes combined into a mass with the 

 radicle, very rarely leafy, radicle often thick. Distrib. — Tropical and 

 fiub-tropical regions of both hemispheres ; species upwards of 2800, 



Tribe I, Leptospermek. Fruit capsular ; leaves opposite or 

 alternate. 



Leaves narrow. 



Flowers few or solitary in the leaf-axils. 



Stamens 10 or fewer, free, in a single series ; leaves 

 opposite ... ... I.. 



Stamens numerous, free, in a single series ; leaves alter- 

 nate ... 

 Flowers in heads or spikes ; leaves usually alternate ; 

 stamens numerous, slightly combined into bundles 

 opposite to and longer than the petals ... 



Leaves broad. 



Flowers in axillary cymes ; leaves alternate ; stamens 

 indefinite, united into 5 bundles opposite to and shorter 

 than the petals 

 Tribe IL Myrtess. Frait a berry ; leaves opposite, often 

 gland-dotted. 



Ovary 1-celled with 2 parietal multi-ovalate placentas : 

 flowers small; leaves 3-nerved from the base 

 Ovary 1-3-celled with 2 rows of ovules in each cell sepa- 

 rated by spiirious partitions ; flowers rather large ; leaves 

 3- to 5-nerved at the base, seeds numerous 

 Ovary 5- (sometimes 4-) celled, with several ovules in each 

 cell, often with spurious partitions ; seeds few ; embryo 

 long and narrow with small cotyledons : flowers small and 

 numerous J leaves not 3-nerved ... ... ... 7. Decaspermum, 



497 



1. B^CKEA, 



2. Leptospermum. 



3. Melaleuca. 



4. Tristania. 



5. Ehodamxia. 



6. Rhodomyrtus. 



