RUTACE #. 399 
leaves, and whose androceum is sometimes isostemonous, and some- 
times diplostemonous; Bouchardatia, having opposite trifoliolate 
Medicosma Cunninghami. 

Fig. 439, Fra. 440. 
Flower (3). Longitudinal section of flower. 
leaves and hermaphrodite tetramerous diplostemonous flowers, 
with an imbricated corolla and ovaries containing an inde- 
finite number of ovules arranged in 
two vertical ranks; Bosis/oa, with Medicoema: urnes: 
pinnate leaves, pentamerous flowers, 
valvate petals, a disk prominent in 
the interval of the stamens, and four or 
five ovules in each carpel; Pagetia, 
with opposite simple or trifoliolate 
leaves, pentamerous and diplostemo- 
nous flowers, the corolla subvalvate, and 
the ovaries 4-G-ovulate; finally, Gei- 
jera, with hermaphrodite, isostemonous 
flowers in four or five parts, surbased 
receptacle, valvate corolla, and a glan- 

dular circular even disk, with more or Fra. 441. Fia. 442. 
less gynobasic style. The leaves are Flower without Gynæceum (+). 
7 corolla (5). 
simple and alternate, and the flowers ; 
disposed in ramified cymes at the summit of the branches, or on the 
wood of the secondary branches.’ 

1 It is only with extreme hesitation that we uncertain, and which is distinguished from all 
have provisionally placed in this group a plant the other types of this group inasmuch as it is 
whose organization is but very imperfectly a tree with alternate simple petiolate leaves 
known to us, and of which we have only been entire, and not punctuate at the adult age. ‘The 
able to study the female flowers. It is Didy- flowers are dicecious and disposed, it is said, the 
meles (Duv.-Tr., Gen. Nov. Madag., n. 69; males in compound racemes, the females in spikes, 
Hist. Vég. Iles Afr. Austr., 9, t. 1;—Enpu., with a perianth represented by two small leaves. 
Gen., n. 6845), whose place has hitherto been In the male flower two stamens alternating 
