Iguanura tomentosa Henderson, 2025
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publication ID |
https://doi.org/10.11646/phytotaxa.690.2.1 |
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persistent identifier |
https://treatment.plazi.org/id/03F68796-985F-FFE3-FF4B-FE37B06A4CBD |
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treatment provided by |
Felipe |
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scientific name |
Iguanura tomentosa Henderson |
| status |
sp. nov. |
30. Iguanura tomentosa Henderson , sp. nov. Type:— MALAYSIA. Sarawak, Nanga Assam, Ulu Melatai, Batang Balleh, 7 th Division, 220 m, 12 April 1985, Yii Puan Ching S. 48330 (holotype SAR!). Plate 11.
Stems 0.9 m long, 1.5(1.4–1.7) cm diameter, solitary. Leaf sheaths 10.8(7.5–15.0) cm long, open and more or less persistent, not cleanly falling, initially covered with dense, woolly indumentum; ocreas well-developed, separating early into fibers and disintegrating; petioles 48.9(25.5–73.5) cm long; rachises 53.0(47.5–60.5) cm long; leaf blades divided, not rounded at the apex, with a deep split; leaf veins parallel; adaxial leaf veins prominent, rectangular in cross-section; pinnae 4–5 per side of rachis; middle pinna 23.3(22.0–24.5) cm long, 5.1(4.7–5.3) cm wide. Inflorescences branched to 2 orders; prophylls and peduncular bracts inserted some distance apart, more or less persistent; peduncles 21.3 cm long, densely reddish-brown, wooly tomentose; rachises 5.8(2.5–9.0) cm long; rachillae 8(4–15), 16.2(7.0–21.5) cm long, 0.9(0.7–1.3) mm diameter, widely diverging from the rachis, proximal part of rachillae not with distantly spaced triads, glabrous or sparsely to densely tomentose, filiform with superficial, distantly spaced triads; rachilla bracts not elongate; distal triad bracteoles well-developed; distal part of flower pits densely tomentose or glabrous; staminate flowers 2.0– 2.5 mm long with blunt apices; anther margins undulate; fruits 10.8(10.2–11.4) mm long, 6.5(5.5–7.5) mm diameter, oblong, apiculate, ridged, the surfaces drying pebbled, pink or red; endocarp polygonal in cross-section; endosperm not recorded.
Distribution and habitat:— Malaysia ( Sarawak) and Indonesia (West Kalimantan) in mixed Dipterocarp forest at 283(220–330) m elevation (Fig. 14).
Taxonomic notes:— Iguanura tomentosa is recognized as a phylogenetic species — see notes under I. palmuncula . It is characterized by its well-developed ocreas, filiform rachillae, and pebbled fruit surfaces. Fruits are scored as oblong, apiculate. However, fruits of the three specimens scored are immature, but appear to be apiculate.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.