ILLUSTRATIONS OF INDIAN BOTANY. 207 
EXPLANATION OF PLATE 87. 
. Lawsonia alba—natural si 8, The same cut transversely, 
2 An expanded flower seen noid above. 9. A seed somewhat hte a 
~ opt _ ck and front views. oe The same cut transy ; 
. The 11. Cut vertically, hendie whe Syeoen in situ. 
5 6. Cut poke ersely and vertically, 12. Embryo detached—with the exceptions mentioned, 
. The fruit nearly mature—natural size. all more or less magnified. 
2 EXPLANATION OF PLATE 838. 
1. Lagerstremia indica, flowering branch—natural 9-10. Horizontal and vertieal sections of the same, 
: ral si 
size. 11, A seed— 
2. A dissected flow . The same fearaited and opened, to show the 
3-4. Anthers back sia front views, position of the seed. 
5, Stigma pA detached seed, 
6.7. Ovary cut Vantiacragd and transversely, 6-celled, i. The ryo removed from the testa, cotyledons 
— the ovules collate blincebas, convolute—atth the exceptions mentioned, all 
. A fruit not quite Giile: more or less 
LIX.—RHIZOPHOREAS, 
one end while the , pe ae to aie themselves at the other. T he species are all trees 
or shrubs with opposite coriaceous simple entire leaves, sometimes, in Carailia, PrP 
The flowers are bi-sexual, Bk axillary, congregated in few or many-flowered cymes. 
Arnott in an excellent memoir on the order published in the Annals of Natural History, vol. Ist, 
has given a detailed character of the Linnean genus Rhizophora, but which he thinks ought 
rather to be considered a group or sub-order, of Rhizophoreae, as containing several distinct 
genera. The group may be called Rhizophor ae, he defines it as follows. 
‘ Calyx 4-14 cleft, persisting: estivation valvate. Petals sessile, 4-14, inserted into the 
calyx and slisieste with its lobes. Stamens 8 or more, inserted with the petals: filaments dis- 
tinct, anthers 2-celled, dehiscing within, Disk fleshy between the ovary and calyx, occasionally 
forming a short toothed ring between the stamens and ovary. Ovary more or less cohering, 
2-4-celled, cells 2-ovuled, ovules pendulous from the apex of a central axis. Style simple. 
Stigma 2-4, dentate or simple. Fruit coriaceous, 1-celled, 1-seeded, after germinatio 
Se achacd perforated at the apex, by the extension of the radicle and tigillus of the embryo 
into a long club. Albumen none. Cotyledons flat, radicle superior.” 
is character does not include Carallia, the seed of which do not germane in the pere- 
carp, bat with that exception, the character applies Pn it also. 
Avrinities. This order differs from all others in the remarkable property of its seed 
germinating before they have left the tree. The structure and dehiscence of the tortie: in 
Rhizophora is also very peculiar. In place of as usual ESR of two parallel cells opening 
either by pores at the apex or by slits, it seems to consist of a solid central axis, the surface 
which contains numerous fovioli containing the pollen and covered by a,membrane, when mature 
