816 cxxv. CASUARiNFi^ (Wright). \Casuanna. 



Benth. Fl. Austral, vi. 197 ; Hook, f . Fl. Brit. Ind. v. 598 ; Engl. Pfl. 

 Ost-Afr. A. 4, B. 289, C. 159 ; Knuth, Blutenbiol. iii. 219, fig. 39 ; 

 Engl. Pflanzenfam. iii. i. 17, fig. 15. C. africana, Lour. Fl. Cochinch. 

 ed. 1, ii. 670, ed. 2, 549. 



Mozamb. Distr. German East Africa : Dar-es-Salaam, Hildebrandt, 1234 ! 

 Usambara; Doreraa, Srheffler, 182! Rovuma Baj'^ Kirk \ Portuguese East 

 Africa : Nanucjua Island, Speke ! Hutton ! Mafinale, Forbes ; Gazaland, Swyn- 

 ncrton ! 



Also on the east side of the Bay of Bengal, the Malay Islands, north of Aus- 

 tralia and the Pacific Islands, ('ultivated specimens have been seen from " St. 

 Ludo\nei"' [sland, Senegal, 7?; M???Aer, 167, and Aburi, Gold Coast. Johnson, 792. 



Order CXXVI. SALICINEiE. 



(By S. A. Skan.) 



Flowers dioecious, one under each bract, in cylindric catkins or 

 more rarely in racemes, ebracteolate. Perianth 0. Disc of 2 gland- 

 like scales, one posterior, the other anterior, or one only and then 

 posterior, sometimes cup-shaped, obliquely truncate, crenate or 

 variously lobed. Male flowers : Stamens 2 to many ; filaments free 

 or connate ; anthers ovate or oblong, affixed at the base or at the 

 back near the base ; cells 2, distinct, parallel, dehiscing longitudinally; 

 rudiment of the ovary 0. Female flowers : Ovary sessile or shortly 

 stalked, 1-celled ; placentas 2-4, parietal ; style short or ; stigmas 

 2-4, rather thick, emarginate or 2-fid and lobed ; ovules 2 to many, 

 in 2 to many series, ascending, anatropous. Capsule ovoid or lanceo- 

 late, 2-4-valved. Seeds few or many, small or minute, each with 

 numerous long silky hairs arising from the funicle ; testa very thin ; 

 albumen 0; cotyledons plano-convex ; radicle short, inferior. — Trees 

 or shrubs. Leaves alternate, entire, toothed or sometimes lobed, 

 nearly always deciduous ; stipules free, small, scale-like and deciduous 

 or larger, leafy, and persistent. Flowers in catkins. Catkins axillary 

 and sessile or terminating short branches, appearing before or with 

 the leaves, pendulous or erect, often silky- villous. Bracts mem- 

 branous, caducous or sometimes in the female catkins persisting 

 till the ripening of the fruits. 



Genera 2 ; species about 210, widely dispersed in the Arctic, Temperate 

 and Tro])ical Regions ot both hemispheres, most frequent in Europe, Temix'rate 

 Asia and North America, usually on the banks of streams or in moist places. 



Ix^aves usually narrow. Disc of 1 or 2 small distinct 



glands 1. Salix. 



Leaves usually broad. Disc cupshaped or annular 2. PoruLUS. 



I 



