Family 1. VOCHYACEAE* 



By Paul Carpenter Standley 



Trees or shrubs, or plants rarely subherbaeeous, often with resinous sap, 

 the branehlets terete or angulate. Leaves opposite or verticillate, the blades 

 simple, entire, penninerved; stipules small, sometimes reduced to glands 

 or absent. Flowers perfect, irregular, large or small, bibracteolate, the 

 inflorescence racemose, paniculate, or thyrsiform. Sepals 5, connate at base, 

 rarely adnate to the ovary, imbricate in bud, subequal or strongly unequal, 

 deciduous, one of them often spurred or saccate. Petals yellow, white, 

 bluish, or purplish, free, perigynous or epigynous, rarely 5, subequal, and 

 alternate with the sepals, usually fewer than the sepals (0-3), contorted or 

 imbricate in bud. Stamens inserted with the petals, typically 10 but only 

 one fertile; filaments cylindric or filiform; anthers linear to oval, 4-celled, 

 dehiscent by 2 longitudinal introrse slits. Ovary free, or rarely inferior, 

 1-3-celled; style simple, terminal, cylindric, thickened above; stigma de- 

 pressed-capitate, more or less trilobate; ovules 2 or more in each cell (rarely 

 solitary), anatropous, attached to a central placenta. Fruit capsular, or 

 rarely samaroid, oblong, terete or 3-angulate, loculicidally 3-valvate, the 

 valves separating from the central axis and usually separating into endocarp 

 and epicarp. Seeds usually winged, the testa membranaceous or coriaceous, 

 often pilose or lanate; endosperm none. Embryo straight, the cotyledons thin, 

 convolute; radicle short, superior. 



1. VOCHYA Aubl. PI. Guian. 18. 1775. ( Vochy.) 



Salmonia Scop. Introd. 209. 1777. 

 Vochisia t Juss. Gen. 424. 1789. 

 Cucullaria Schreb. Gen. 6. 1789. 

 Strukeria Veil. Fl. Flura. 8. 1825. 

 Vochyopsis Kuntze, Rev. Gen. 3 2 : 12. 1898. 



Trees or shrubs, or rarely subherbaeeous plants, the branehlets terete or angulate, their 

 bark often exfoliating. Leaves opposite or verticillate, coriaceous. Stipules small or none. 

 Inflorescence terminal, thyrsoid, composed of racemosely arranged, 2- 10- flowered, scorpioid, 

 pedunculate cymes, the pedicels bibracteolate. Sepals 5, connate at base, the lateral and 

 anterior ones short, the posterior one large and usually produced into a spur. Petals 3 (rarely 

 1 or none), inserted in the throat of the calyx, linear or spatulate, the anterior one commonly 

 largest. Fertile stamen one, the filament subulate or filiform; anther basifixed, elongate, sur- 

 passed by the connective, this cucullate at apex; staminodia 2 or none. Ovary free, 3-celled, 

 attenuate to a filiform style; stigma oblique, subtrilobate. Capsule coriaceous or woody, 3- 

 angulate, 3-celled, the endocarp not separating from the epicarp. Seeds one in each cell, ob- 

 long, compressed, winged. 



Type species, Vochya guianensis Aubl. 



Leaves fermginous-tomentulose beneath; spur of posterior sepal circinate; 



stamen pilose. 1. V. ferruginea. 



Leaves glabrous ; spur of posterior sepal only slightly curved ; stamen glabrous. 

 Leaves acuminate or short-cuspidate. 



Leaves verticillate, the venation not prominent. 2. V. guatemalensis. 



* Published by permission of the Secretary of the Smithsonian Institution, 

 t Commonly written Vochysia by subsequent authors. 



Volume 25, Part 4, 1924] 301 



