Araliaceae. 



KEY TO THE GENERA. 



Leaves pinnate, alternate. 

 Leaflets entire: 



Leaflets 13-21, flowers racemose umbellate, arranged' in a long drooping 



panicle Pterotropia 



Leaflets 5-13, inflor. racemose-umbellate or umbellate and panicu- 

 late Tetraplasandra 



Leaflets sinuate creuate Reynoldsia 



Leaves digitate, opposite Cheirodendron 



TETRAPLASANDRA A. Gray. 

 (Triplasandra Seem.) 



Calyx border undulate or denticulate, petals 5 to 8, valvate in the bud. Stamens as 

 many as petals or 2 to 3 times or even 6 times as many, arranged in 1 or 4 series, with 

 rather thick filaments and ovate or lanceolate anthers. Ovary quite inferior, ovate, 13-7-5-2 

 celled. The stigmas on a short stylopod or subsessile; drupes globose to ovate-elongate 

 or cylindrical, with a somewhat fleshy covering. Pyrenae chartaceous, crustaceous or 

 coriaceous, compressed. Seeds often ribbed or furrowed. Unarmed glabrous or tomeutose 

 trees or shrubs with a glutinous sap. Leaves large, alternate impari-pinnate, with 5 to 13 

 entire leaflets; petiolule of the terminal leaflet usually articulate. Stipules wanting or 

 rudimentary. Inflorescence a racemose umbellate panicle or a simple or compound umbel; 

 bracts caducous, small or larger; peduncles not articulate, often very thick. 



The genus Tetraplasandra derives its name from the Greek rerpairXa^io^ 

 (tetraplasios), fourfold, and arSpa (andra), stamens, having- four times as many 

 stamens' as petals. It consists of possibly 12 species, two of which are not found 

 in the Hawaiian Islands; T. paucidens Miq. occurs in New Guinea, while T. 

 Koerdersii Harms is found in Celebes. Of Hawaiian species, only two were de- 

 scribed originally, T. Jiawaiiensis A. Gray and T. Waimeae Wawra. All the 

 species of Triplasandra (established by Seeman) have been merged into Tetra- 

 plasandra by H. Harms. The writer has since added two new species: T. 

 Lanaiensis and T. Waialealae. 



KEY TO THE SPECIES. 



I. EUTETEAPLASANDRA. Stamens 2-6-8 times as many as petals. 

 Leaves tomentose underneath. 

 Inflorescence paniculate. 



Stamens 4 times as many as petals T. Hawaiiensis 



Leaves glabrous underneath. 

 Inflorescence umbellate. 



Stamens numerous, 6-8 times as many as petals... T. Waimeae 

 Inflorescence compound umbellate. 



Stamens 4 times as many as petals; ovary 6 celled. . T. Waialealae 

 Stamens twice as many as petals; ovary 3 celled. . . T. Lanaiensis 

 Stamens 2-3 times as many as petals. 



Drupe ovoid with conical vertex T. Lydgatei 



Drupe cylindrical truncate. 



Stamens l()-lo; ovary 5-6 celled T. Oahuensis 



Stamens 12-18; ovary 4-3 celled T. Kaalae 



II. NOTHOTETRAPIASANDRA. Stamens as many as petals, 5-8; ovary, 5-2 celled. 

 Inflorescence umbellate or compound umbellate T. meiandra and varieties 



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