Guarea convergens T.D.Penn.

Authority

Pennington, Terence D. 1981. Meliaceae. Fl. Neotrop. Monogr. 28: 1-359, 418-449, 459-470. (Published by NYBG Press)

Family

Meliaceae

Scientific Name

Guarea convergens T.D.Penn.

Type

Type. Pennington, Prance, Ramos & Monteiro 9967, Brazil, Amazonas, Manaus to Caracarai road, km 154, fl (holotype, INPA; isotypes, FHO, MO, NY).

Description

Latin Diagnosis - Rami novelli primo adpresso-puberuli usque breviter pubescentes, mox glabri, brunnei vel griseo-brunnei, rimis longitudinalibus et saepe transversis fissi. Folia pinnata, usque ad 50 cm longa, gemmula terminali incremento intermittente; Petiolus semiteres; rhachis teres vel supra canaliculata; omnia puberula vel breviter pubescentia, postea glabra; petiolulus 2-3(-6) mm longus. Foliola 3-12-juga (obviis septenis maximum paribus simul) elliptica, oblonga vel oblanceolata, apice anguste attenuata vel acuminata, basi acuta, cuneata vel attenuata, vulgo coriacea, 11.5-18.5[14.4] cm longa, 4-6[4.9] cm lata (foliis inferioribus saepe multo minoribus), glabra vel subtus secus costam sparse pubescentia, non glanduloso-punctata nec -striata; venatio eucamptodroma, costa impressa; nervi secundarii 7-11 utroque costae latere, adscendentes, arcuati, convergentes, intersecundarii prominuli, tertiarii dissiti, obscuri, reticulati vel ± obliqui. Inflorescentia axillaris, 5-11 cm longa, thyrsoidea, gracilis vel anguste pyramidalis, ± densiflora, puberula, ramis inferioribus 1-2.5 cm longis; pedicellus 0.5-1.5 mm longus. Calyx patelliformis vel vadose cyathiformis, 1-1.5 cm longus, extus sparse adpresso-pub-erulus, irregulariter 3-4-lobatus, lobis acutis usque rotundis. Petala 4, valvata, 6.5-7.5 mm longa, 1.5-2.5 mm lata, oblonga vel lanceolata, apice acuta, extus (interdum dense) adpresso-puberula, intus glabra. Tubus stamineus nonnumquam ad fauces coarctatus, 5-5.5 mm longus, 1.5-3 mm latus, margine undulatus, glaber vel rarius extus sparse puberulus; antherae 7-8, 0.6-0.8 mm longae. Nectarium stipitiforme, in annulum infra ovarium ampliatum, 1.25-1.5 mm longum, glabrum. Ovarium (3-)4-loculare, loculis uniovulatis, strigosum; stylus glaber. Capsula ± globosa, apice ± truncata, basin versus paullum attenuata, minute papillosa, 3.54.5 cm diam., valvis obscure et irregulariter 6-7-costatis, costis interdum supra reticulatis, valvis 4 monospermis; pericarpium 4-5 mm crassum. Semen ovoideum, latere abaxiali complanatum, ca. 2 cm longum, 1 cm latum, sarcotesta de latere abaxiali incrassata et valde vascularizata cinctum; testa seminis tenuis sed lenta; hilum ca. 1.5 cm longum, 0.8 cm latum. Embryo cotyledonibus crassis, plano-convexis, superpositis instructus, superficiebus exterioribus sarcotesta vascularizata profunde impressus; radicula abaxialis, superficiem attingens.

Species Description - Tree to 25 m; trunk sometimes with rounded protuberances. Bark usually brown and scaling, less frequently fissured. The flowers, which have a pinkish-purple calyx and cream-coloured corolla, have been recorded in March, May and September. The mature fruit is reddish, with a leathery-fleshy pericarp containing a small amount of white exudate. It is eaten by rodents. The only record of mature fruit is from August. Tree to 25 m; trunk sometimes with rounded protuberances. Bark usually brown and scaling, less frequently fissured. The flowers, which have a pinkish-purple calyx and cream-coloured corolla, have been recorded in March, May and September. The mature fruit is reddish, with a leathery-fleshy pericarp containing a small amount of white exudate. It is eaten by rodents. The only record of mature fruit is from August.

Discussion

Relationships

Distribution

A tree of non-flooded lowland forest, known only from Central Amazonia.

Brazil South America| Amazonas Brazil South America|