Geonoma stricta subsp. stricta

Henderson, Andrew, 2011, A revision of Geonoma (Arecaceae), Phytotaxa 17, pp. 1-271 : 143

60a. Geonoma stricta subsp. stricta

Geonoma maguirei Bailey (1948: 102) . Type: SURINAME. Coppename River headwaters, 24 July 1944, B. Maguire

24166 (holotype NY!).

Leaves undivided, rarely pinnate; veins not raised or slightly raised and triangular in cross-section adaxially; pinnae 1(1–3) per side of rachis. Inflorescences unbranched, rarely branched; staminate flowers deciduous after anthesis, rarely persistent.

Distribution and habitat:— From 2°20’– 7°10’N and 52°50’– 58°50’W in the northeastern Amazon region of Suriname and French Guiana, with an outlying specimen in Guyana, at 373(100–800) m elevation in lowland rainforest ( Fig. 38 ).

Two specimens from French Guiana (de Granville 4803, Le Prieur s. n.) are unusual in having branched inflorescences with 2–3, stouter rachillae, and one has a pinnate leaf (the only one in this subspecies). They are recognized as the neglecta morphotype. One of these specimens (Le Prieur s. n.) has “ Geonoma neglecta ” written, in Trail’s hand-writing, on the label. This specimen was illustrated by Wessels Boer (1968, plate V) and determined by him as G. bartlettii . However, the type of that name was destroyed and it is treated here as an excluded name. Two specimens from Suriname (Sastre 1567, Wessels Boer 1558), with larger leaves and inflorescences with persistent staminate flowers appear more like those of the pycnostachys morphotype of subsp. arundinacea . These are recognized as the large morphotype.

Figures

FIGURE 38. Distribution maps of Geonoma spinescens, G. stricta subsp. stricta, G. stricta subsp. antioquiensis, and G. stricta subsp. arundinacea.