Monographs Details: Couepia amaralae Prance
Description:Latin Diagnosis - Species C. racemosae affinis, foliis minoribus 2.5-6 cm longis, subtus cavis stomatalis profundis, petiolis 4-5 mm longis differt.
Description - Shrub 1-4 m tall, the young branches appressed lanate pubescent, becoming glabrous with age. Leaf lamina oblong to oblong-elliptic, coriaceous, 2.5-6 × 1.5-3.2 cm, rounded at base, acute or bluntly acuminate at apex, glabrous above, prominently reticulate beneath with conspicuous deep stomatal cavities filled with short gray pubescence; midrib prominent and sparsely lanate beneath, slightly impressed above; primary veins 9-10 pairs, prominent and lanate beneath, plane to slightly impressed above; petioles 4-5 mm long, lanate when young, rugulose, terete, eglandular. Stipules caducous. Inflorescences of little branched panicles or racemes, axillary and terminal, the rachis and branches brown-tomentose. Bracts and bracteoles ovate, caducous, tomentellous on both surfaces. Receptacle campanulate-turbinate, 3-4 mm long, tomentellous on exterior, glabrous within except for deflexed hairs at throat. Calyx lobes five, acute, 2 mm long, tomentellous on both surfaces. Petals five, white, glabrous. Stamens 35-40, inserted around half of circle. Ovary densely villous. Style glabrous except for deflexed hairs at base. Fruit globose, 5 cm diam.; exocarp glabrous, lenticellate; pericarp 2-2.5 mm thick, hard and woody, tomentose within.
Discussion:This distinctive new species belongs to the Couepia species group with deeply reticulate leaves. The lower leaf surface has deep stomatal cavities more similar to those that occur in Parinari and a few species of Licania than to those of other species of Couepia. It differs from C. foveolata, which also has stomatal cavities, in the branched inflorescence and in the short blunt leaves, and from C. steyermarkii and C. canescens in the branched inflorescence, the stomatal cavities and the leaf shape. It differs from C. racemosa in the much smaller, blunt leaves, the deep well-defined stomatal cavities, the shorter petioles and the lanate pubescence of the leaf venation below.It is with pleasure that this species is dedicated to Ieda L. do Amaral, the Brazilian botanist who was leader of the Araca expedition on which the type was collected.
Distribution:Brazil South America
| Amazonas Brazil South America