Adelia Cinerea (Euphorbiaceae), Formerly In Bernardia

Adelia cinerea (Euphorbiaceae), formerly in Bernardia
´ ANGELICA CERVANTES, VICTOR W. STEINMANN, HILDA FLORES OLVERA AND

Cervantes, A. (Departamento de Botanica, Instituto de Biologıa, UNAM, Apdo. ´ ´ Postal 70-233, 04510 Mexico, D.F., Mexico; email: anac@ibiologia.unam.mx), V. ´ W. Steinmann (Instituto de Ecologıa, A. C., Centro Regional del Bajıo, Apdo. ´ ´ Postal 386, 61600 Patzcuaro,Michoacan, Mexico; email: steinmann@ ´ ´ inecolbajio.edu.mx) & H. Flores Olvera (Departamento de Botanica, Instituto de ´ Biologıa, UNAM, Apdo. Postal 70-233, 04510 Mexico, D.F., Mexico; email: ´ ´ mahilda@servidor.unam.mx). Adelia cinerea (Euphorbiaceae), formerly in Bernardia. Brittonia 55: 4–9. 2003.—The new combination Adelia cinerea (basionym: Bernardia cinerea) is made. Notes on its distributionand ecology are provided, as well as a full morphological description. A discussion on the morphological and palynological distinctions between Adelia and Bernardia, and reasons for the transfer, are presented. The placement of this species in Adelia implies a tribal change (from Bernardieae to Adelieae) within subfamily Acalyphoideae. It brings the number of Mexican species of Adelia to six. Keywords: Euphorbiaceae, Acalyphoideae, Adelia, Bernardia, Mexico. Cervantes, A. (Departamento de Botanica, Instituto de Biologıa, UNAM, Apdo. ´ ´ Postal 70–233, 04510 Mexico, D.F., Mexico; email: anac@ibiologia.unam.mx), ´ ´ V. W. Steinmann (Instituto de Ecologıa, A. C., Centro Regional del Bajıo, Apdo. ´ ´ Postal 386, 61600 Patzcuaro, Michoacan, Mexico; email: steinmann@inecolbajio. ´ ´ ´ edu.mx)& H. Flores Olvera (Departamento de Botanica, Instituto de Biologıa, ´ ´ UNAM, Apdo. Postal 70–233, 04510 Mexico, D.F., Mexico; email: mahilda@ ´ ´ servidor.unam.mx). Adelia cinerea (Euphorbiaceae), formerly in Bernardia. Brittonia 00: 000-000. 2003.—Se propone la combinacion nueva Adelia cinerea (ba´ sonimo: Bernardia cinerea), proporcionandose la descripcion morfologica com´ ´ ´ ´ pleta deltaxon, ası como notas sobre la distribucion y ecologıa. Se discuten las ´ ´ ´ diferencias morfologicas y palinologicas entre Adelia y Bernardia que justifican ´ ´ la transferencia. La ubicacion de esta especie en Adelia implica un cambio de ´ tribu, de Bernardieae a Adelieae, en la subfamilia Acalyphoideae. El numero de ´ especies mexicanas de Adelia se eleva a seis.

The Acalyphoideae, one of fivesubfamilies of the Euphorbiaceae recognized by Webster (1994), is the most diverse subfamily in Mexico, with 16 genera found in the country. With few exceptions these genera are well defined and unlikely to be confused with one another. Although the neotropical genera Bernardia Houst. ex Mill. (tribe Bernardieae) and Adelia L. (tribe Adelieae) are superficially similar, upon close exami-

nationthey are quite distinct. Bernardia has been associated with Adelia but the pollen of Adelia differs markedly. Tribes Bernardieae and Adelieae do not appear to be closely related (Webster, 1994). Linnaeus treated them together under Adelia, and many taxa presently recognized as Bernardia were first described in Adelia. Also, two of the approximately 13 species currently treated as Adelia were initiallydescribed as
ISSUED: 11 June 2003

Brittonia, 55(1), 2003, pp. 4–9. 2003, by The New York Botanical Garden Press, Bronx, NY 10458-5126 U.S.A.

2003]
MORPHOLOGICAL
Character

CERVANTES ET AL.: EUPHORBIACEAE
TABLE I AND PALYNOLOGICAL DISTINCTIONS BETWEEN
Adelia

5
AND

Adelia

Bernardia

Bernardia

Leaf glands Filaments Pistillode Anthers Male disc glands Fruiting pedicelPistillate flower Apertures Costa ectocolpi Operculum Tectum Margo Foot layer Columellae

absent connate, at the base or into a column present subdorsifixed versatile extrastaminal, mostly annular, rarely composed of 5 segments well-developed, long and slender solitary or rarely in 2–4-flowered racemes 3(–4)-colp(oroid)ate not observed present, variable in shape and size; stratified almost complete...