UMBELLIFER^. 163 



by longitudinal furrows, or thinned below to a wing and dilated above 

 to two lateral tubercles. 



Gastonia (fig. 203) is also very analogous to certain Scheffleras of 

 the section Heptapleumm, particularly to those which have more than 

 five parts to the flower. The urceolate or turbinate receptacle bears 

 on its margin a calyx very short or almost nil, entire or with 8-15 

 teeth, indistinct, and 8-15 thick trian- 

 gular and Valvate petals. There is the Cfastonia (Trevma) sundaka. 



same number of alternate stamens in- 

 serted under the margin of a flat or 

 slightly bulged disk which crowns the 

 ovary, and this contains as many cells 

 (or nearly so) as there are petals, to 

 which they are superposed. In the 

 .true Gastonia, from Madagascar and the 

 Mascarene isles, with compound pinnate 

 leaves, the style, tolerably developed, is 



T ■ • 1 T . , -,7 1 Fig. 203. Long. eeot. of 



divided into as many recurved branches flower (j). 



as there are cells in the ovary. In the 



species of the section^ Trevesia, which inhabit tropical Asia and 

 Oceania and have digitate or palmatifid leaves, the style is short, 

 stubby and divided into lobes much less distinct. In Reynoldsia, from 

 the Sandwich Isles, which may have fifteien or sixteen ovarian cells 

 and from six to thirteen stamens, the style is also thick, conical and 

 channeled, but the leaves are compound-pinnate, as in the African 

 species. In all these plants the pedicel is without articula- 

 tion. • . , .-'.. 



It is the same in Gilibertia, which may be considered the analogue, 

 in tropical South America, of Gastonia, and which has very variable 

 flowers. The receptacle is a thick tube the margin of which bears a 

 short truncate or obscurely dentate calyx, a corolla of from five to 

 ten triangular and valvate petals with a salient median ridge, as 

 many stamens with apiculate and subcordate anthers. The ovary is 

 6-12-celled and the thick style is divided into the same number of 

 small lobes. The fruit is a drupe with many putamens. They are 

 glabrous trees from Peru and Brazil, with simple leaves, entire or 

 nearly so, and terminal, simple or compound umbels (?). 



Panax (fig. 204-207), as we define it, ' is connected by various 

 characters with many of the preceding genera. By its more 



M 2 



