516 Britton: Sim. us of West Indiw plants 



Guadaloupe; I studied the type specimen of C. polyadena in the 

 Candollean herbarium at Geneva a number of years ago; it is, 

 in my opinion, specifically distinct from the Jamaica plant. 



Rhamnidium ellipticum Britton & Wilson, sp. nov. 



A glabrous tree 8 m. high; leaves narrowly to broadly elliptic, 

 occasionally somewhat obovate, 3.5-6.5 cm. long, 1.3-3 cm - broad, 

 obtuse or rounded and usually emarginate at the apex, rounded 

 or obtuse at the base, coriaceous, entire, above lustrous, the mid- 

 vein and primary veins indistinct, pale beneath, the mid vein and 

 primary veins prominent; margin revolute; petioles 5-6 mm. long, 

 channeled; peduncles 1.5-3 cm - l n g> few-flowered; pedicels 5 

 mm. long; calyx-lobes triangular-ovate; fruit obovoid, 1 cm. long, 

 6 mm. broad, glabrous. 



Rocky hillside along trail, Rio Yamaniguey to Camp Toa, 

 Oriente, Cuba (Shafer 4005). 



Rhamnidium Shaferi Britton & Wilson, sp. nov. 



A glabrous tree 3 m. high; leaves oblong-oval to oval, occa- 

 sionally ovate-oval, 5-6.5 cm. long, 3-3.8 cm. broad, rounded and 

 emarginate at the apex, cordate at the base, lustrous above and 

 indistinctly reticulate-veined, beneath paler, the midvein and 

 primary veins prominent; petioles 9-15 mm. long, narrowly 

 grooved; peduncles 7-10 mm. long, few-flowered; pedicels 3 mm. 

 long; buds ovoid. 



Camp La Gloria, south of Sierra Moa, Oriente, Cuba (Shafer 

 8192). 



Rhamnidium (?) cubensis Britton & Wilson, sp. nov. 



A shrub 3 m. tall, with grayish bark and puberulent twigs. 

 Leaves oblong-elliptic to narrowly oblong-ovate or oblong-obovate, 

 2-4 cm. long, 1-1.6 cm. broad, rounded and emarginate at the 

 apex, obtuse at the base, entire, lustrous above, the primary veins 

 prominent, reticulate-veined and paler beneath, rigid, glabrous, 

 black-dotted, the petioles 2-3.5 mm. long, puberulent above and 

 shallowly channeled; flower-clusters lateral, axillary; sepals tri- 

 angular-ovate, acuminate, glabrous, with a conspicuous row of 

 black glands paralleling the margin; petals hooded, broadly 

 triangular-obovate ; filaments subulate, glabrous; anthers ovate; 

 ovary ovoid, glabrous; ovules one in each cavity. 



Rocky coastal hills, vicinity of El Morro, Santiago Bay, 

 Oriente, Cuba (Britton ef Cowell 12554). 



