^^^' L. COMBEETACE^ [An<>ij( l^sm 



A large tree with hanging branches, branchlets and underside of full grown 

 1. softly pubescent. L. lanceolate, acuminate, blade 1-3, petiole I in., sec. n. 

 6-8 pair. El. heads }~-\ in. diam,, on peduncles, which as a rule are as lono- 

 as or shorter than the diameter of the flower-head. Fr, generally broader than 

 lona;. 



Chanda district C.P. Northern Circars. Cliittagong hill tracts. Burma, Upper and 

 Lower. M. Feb.-March. A. phiUyrecefolla, Heurck & MuelL, Fl. Brit. Inch ii 451, is 

 a variety with narrower more glabrous L and smaller £ -heads, in the dry region of the 

 Irawaddi valley between Prome and Mandalay, analogous to the vaiiety of A. serirea 

 on the dry hills of Merwara. 



Oeder LI. MYRTACE^. Gen. PL i 690. 



Trees or shrubs, 1. simple, generally quite entire, either opposite (rarely 

 alternate) with translucent glands {Mijrtacea^ proper) or alternate without 

 glands {Leq/tJddace(F), Stipules 0. El. regular, generally bisexual Ovary 

 2- or more celled, enclosed in and generally entirely adnate to the calyx-tube. 

 Petals 4 or 5, imbricate in bud. Stamens numerous inserted with the petals 

 in the mouth of the calyx-tube or on the disk lining it. Emit usually fleshy, 

 in some genera a capsule. 



Myrtacem comprise two distinct groups, correctly treated in Engler u. Prantl iii. 7- 

 26, 57, as separate orders. Mi/rtacem projier have cavities, containing etliereal oil, lined 

 with small tbin-walled cells, in leaves, branchlets and generally in all green parts, as 

 a rule immediately under the epidermis. In leaves these oil cavities may often be seen 

 as translucent points. Eurther there are strands of phloem in the circumference of 

 the pith, usually wathout thick-walled bast fibres. Apart from the med. rays, which 

 are always narrow, parenchyma does not form an important element in the wood. 

 Lecytliidacem have no oil cavities and there is no phloem in the pith, transverse bars of 

 wood parenchyma between the rays are not uncommon. The chief character, however, 

 of the last-named order is that the leaf traces (vascular bundles) which enter the petiole 

 separate from the central cylinder some distance below the insertion of the leaf. Hence 

 the transverse section of a branohlet shows, as i« the case in Dijpterocarps^ a number of 

 vascular bundles in the bark. In the petiole and midrib these vascular bundles do not 

 coalesce, but remain distinct. 



A. Mj/rtaeece proper. Leaves opposite, rarely alternate, gland-dotted. 



I. Leaves as a rule opposite, penninerved. 



Calyx 4-lobed, ov&tj 2-ceIled, seeds one or few . 1. Eugenia. 

 Galyx 4-5-lobed, ovary A- or 5-celled, seeds several 



Peduncles 1-flowered Myrtus (p. 326). 



Eh paniculate BECASj>nRMLM (p. B26). 



Calyx closed in bud, splitting irregularly, seeds 



numerous Psidium (p. 826). 



II. Leaves opposite, 3 longitudinal nei-ves. 



Ovary 1-celled, ovules numerous on i^arietal 



placentas Ehodamniv (]). 326). 



Ovary 8-6-celled, 1. tomentose beneath . . . RHonoMyiui ^ (p. 326), 

 III Leaves (of older plants) alternate. 



Calyx truncate, the orifice closed in bud by a cap 



(operculum) formed of the concrete petals . 2. Eucalyptus. 

 Calyx 5-lobed. 



Stamens free Leptospermum (p. 328). 



Stamens in 5 bundles, opposite the petals. 

 Leaves penninerved . . ■ . . .3. Tristama. 

 8-7 longitudinal nerves Melaleuca (p. 329). 



B. LecythidacecE. Leaves alternate, ^lot gland-dotted. 



All stamens fertile, £. in spikes or racemes . . . 4. Barrik<.'ionia. 

 The stamens of the exterior and interior circle with- 

 out anthers 5, Carkya. 



The stamens of the inner circle only without anthers. ' Planc honia (p. 3^ 



