862 DICO u A m ELATERIUM. 
5. E. gracile (Cogn. Diagn. Cucurb. fase. 2, p. 51); foliis utrin- 
que sparse breviterque pilosis, supra scabriusculis, subtus mollibus, 
longioribus quam latis, subintegris vel leviter trilobatis, lobis oblongo- 
lanceolatis ; floribus masculis in racemos subumbelliformes 12-20-flo- 
ros foliis plus minusve æquales digestis ; calicis tubo elongato, lineari, 
petalis duplo longiore. — Rytidostylis gracilis Hook. et Arn.! Dot. 
Beech. Voy. p. 424, tab. 77, fig. A; Rœm. Syn. fasc. 2, p. 109. 
Rami graciles, angulato-suleati, glabri. Petioli filiformes, striati, 
glabri, inferiores 5-6 cent. longi, superiores subnulli. Folia supra 
leete viridia, subtus pallidiora, plerumque subquadrangularia, acuta 
et breviter mucronulata, 8-11 cent. longa, 5-9 cent. lata, margine 
leviter undulato-denticulata; nervi tenuissimi, subtus vix prominen- 
tes, duo laterales basilares bifurcati, imum sinum non marginantes: 
sinus basilaris obtusus, angustissimus, 2-3 cent. profundus. Cirrhi 
graciles, elongati, striati, glabri. Pedunculus communis masculus fili- 
formis, striatus, glaber, 4-8 cent. longus ; pedicelli erecto-patuli, 5-12 
mill. longi. Calyx glaber, tubo basi subtruneato, ad apicem vix dila- 
tato, 15-16 mill. longo, ad medium 1 */, mill. et prope apicem 2 mill. 
lato; dentes patuli, subnulli. Stamina tubo calycis «equalia; filamen- 
tum ad basim papilloso-glandulosum, ad medium villosum, ad apicem 
glabrum; capitulum antherarum ovato-oblongum, 1 */,-2 mill. lon- 
gum. Flores feminei brevissime pedunculati, quam masculi multo 
majores. Calyx stipitatus, basi subtruncatus, 28 mill. longus; dentes 
lanceolato-triangulares, 1 mill. longi. Petala 12 mill. longa. Stylus 
inferne rugosus, calycis tubo æquans: stigma ovato-oblongum, 1'/, 
mill. longum. Ovarium oblongum, 4-5 mill. longum, dense hirsutum. 
Pedunculus fructiferus crassus, 6-10 mill. longus. Fructus compressus. 
oblique vix rostratus, omnino sparse setosus, 12-14 mill. longus, 9 mill. 
latus. Semina cinerea, subcruciformia, ad basim anguste longeque 
appendiculata, apice bidentata, 7 mill. longa, 3-4 mill. lata. */, mill. 
crassa. 
In Mexico (Karwinsky in herb. Monac. ; Ghiesbrecht n. 300 in herb. 
Mus. Par.); prope Oaxaca (Galeotti n. 1589 et 1882 in herb. Brux., De- 
less., Vindob., Acad. Petrop., Kew.) ; prope Tabago (Thiebaut 2. 1261 
in herb. Mus. Par.); ad Cuernavaca (Hahn n. 381 in herb. Mus. Par.): 
in Nicaragua ad Realego (Sinclair in herb. Kew.) ; in Costarica (Pola- 
kowsky n. 311 in herb. Vindob.; Endres n. 5 in herb. Kew); a 
8. José (C. Hoffmann n. 404 in herb. Berol.); in monte Jaris (Oersted 
n. 16 in herb. Haun.); ad Realejo (Oersted n. 17 in herb. Haun.) : 
in Panama (Hinds in herb. Kew., hort. Petrop. et Acad. Petrop- : 
