364 xlvii. § mimose^e (oliver). [PithecoloUum 



LP. altissimum. Tall tree; extremities, leaf-rachis and pe- 

 duncles rusty-puberulous, branches at length glabrate. Leaves 4-8 in. 

 long-; pinnae 4-7-jugate, leaflets linear-oblong, glabrous, i-Jin. long' 

 1 line, more or less, broad, 20-25-jugate. Flowers capitate, sessile; 

 peduncles f m. more or less, axillary, solitary or fascicled or shortly 

 racemose on lateral branchlets. Calyx tubular, shortly dentate, nearly 

 glabrous. Petals united nearly throughout, 2-2J- times longer than 

 calyx. United base of the filaments included. ^Peduncles in fruit 

 often stout. Legume compressed, spirally contorted, more or less con- 

 stricted between the seeds at intervals of J-i in., 8-10 in. long i-i 

 in. broad. — Albizzw altissima, Hook. f. Fl. Nigr. 332. 



Upper Guinea. Niger Expedition, Dr. T. Vogel! Aboh, Niger, Barter! Nun 

 and Camaroons river, Mann ! 



Order XLVIII. ROSACEJE. (By Prof. Oliver.) 



Flowers regular, rarely irregular, hermaphrodite (polygamous or 

 dioicous in Pygeum, Bray era, Cliff ortia). Calyx free (or apparent tube 

 adherent to the ovary), tube various, short or elongate, plane cam- 

 panulate or urceolate, lobes usually 5 imbricate or biseriate or with 

 alternating bracteoles. Stamens perigynous, indefinite (or definite in 

 Alchemilla, some Cliffortice and Neurada) ; filaments free or more or less 

 coherent in Chrysobalanece. Carpels 1 or more, definite or indefinite, 

 free or consolidated with the calyx-tube or receptacle ; styles as many 

 as carpels, oblique and subterminal or ventral. Ovules 1 or 2 in Trop. 

 African Genera. Fruit various, if superior the carpels dry or drupa- 

 ceous, if inferior baccate. Seed erect or pendulous, almost invariably 

 exalbuminous. — Herbs, shrubs or trees. Leaves various, simple or 

 compound, usually alternate and stipulate. Inflorescence very various. 



A rather large and wide-spread Natural Order, most numerous in temperate regions 

 of the Northern hemisphere. Brayera and Ghriffonia are the only genera peculiar to 

 tropical Africa, but perhaps the latter is not generically distinct from Acioa, Aubl., of 

 tropical America, though maintained at present, following the " Gen. Plantarum"of 

 Bentham and Hooker. Cliffortia is exclusively African, but restricted to the Cape, 

 with but the exception of one species. 



Shrubs, sometimes scandent, or trees. Leaves simple, entire. Carpel solitary, free; 

 ovules 2, erect; style basal (§ Chrysobalanece). 



Ovary sessile at base of calyx-tube ; 1-celled 1. Chrysobalanus. 



Ovary sessile in mouth of calyx- tube. 



Ovary wholly or partially 2-celled. Filaments connate only 



at base . . 2. Paeinarium. 



Ovary 1-celled. Filaments united in long strap 3. Griffonia. 



Trees^ or shrubs. Leaves simple, entire or serrate. Carpel usually solitary, style 

 subterminal; ovary superior, with 2 pendulous ovules (§ Pruneaz). 



Petals small. Pericarp dry, coriaceous 4. Pygeum. 



Petals conspicuous. Fruit a drupe {cultivated only) . . . .- *Prunus. 



Shrubs, usually aculeate (in Africa). Calyx persistent, inferior ; 

 lobes ebracteolate. Stamens <x>. Carpels oo, inserted on 

 convex receptacle. Ovules 2, pendulouB (§ Rubece) ... 5. Rubus. 



