Pterisanthes eriopoda (Miq.) Planchon (1887: 418)

Parnell, A. N., 2014, A taxonomic revision of Pterisanthes (Vitaceae) in Thailand and a new Thai record for Pterisanthes cissioides, Phytotaxa 159 (2), pp. 95-104 : 96-98

Pterisanthes eriopoda (Miq.) Planchon (1887: 418) .

Vitis eriopoda Miquel (1863: 95) .

Pterisanthes ovata Korth. nom. nud.

Lectotype (designated here):— INDONESIA. Sumatra, Korthals s.n. (lectotype L! (electronic image with barcode L0715762 ); isolectotype L! (electronic image with barcode L0715763 ) and K!) .

P. coriacea var. araneosa King (1896: 408) . Lectotype (designated here):— MALAYSIA. Peninsular Malaysia, Perak (central), Gopeng Kinta , July 1883, King’s Collector 4621 (K!).

P. beccarina Planchon (1887: 418) . Lectotype (designated here):— Sarawak, Beccari 796 (FI! (No: 2743); isolectotypes FI! (No: 2743A), FI! (No: 2743B)).

Tendrils branching from the inflorescence peduncle, mostly simple, sometimes bifurcate, 5–15 cm long, slender, slightly hairy or tendrils unrelated to the inflorescence, simple, robust, leaf-opposed. Leaves simple; petiole 1–3 cm long, with long and thin (ca. 3 mm × 0.1 mm) wavy ferruginous hairs; leaf blade ovate to elliptical, to 19 × 10 cm, base cordate, margin entire with 1–2 mm long black teeth at the end of the veins (to 5 per side), the leaf, apex acute to acuminate, coriaceous to frequently chartaceous; adaxial surface often glabrous, sometimes with a few scattered hairs more dense on the veins, abaxial surface arachnoid (occasionally sparsely pubescent) with long ferruginous wavy hairs, conspicuously dense on the protruding veins and persistent on the leaf margin; 5–6 main veins arising from the midrib on each side and numerous conspicuous secondary veins and venules. Inflorescence 10–17 × 1–3.5 cm, narrow, purple; peduncle 3–4.5 cm, slightly hairy; lamellate flowers present.

Distribution. — Indonesia (Java, Sumatra), Malaysia (Peninsula, Sarawak), Thailand (Ranong, Songkhla, Narathiwat ( Fig. 1 )).

Ecology. —It grows in evergreen forest. 100–650 m elev. Flowering and fruiting from November to July.

Specimens examined. — INDONESIA. Sumatra: Korthals s.n. ( L ( L0715762 )); Korthals s.n. (L ( L0715763 ), K). MALAYSIA. East Malaysia: Sarawak, 1865-68, Beccari 796 ( FI, FI, FI). Peninsular Malaysia: Pahang, Gunung Tahan, ca 1,000 m, 19 June 1922, Haniff & Nur 8027 ( K); Negri Sembilan, Gumong Angsi falls to west, 610 m, 17 November 1923, Nur 11752 ( K); Perak (central), Gopeng Kinta, July 1883, King’s Collector 4621 ( K). THAILAND. Narathiwat: Pah Bukethamong, Ra-ngae district , Sangkachand 917 [ BKF no. 54067] ( BKF). Ranong: Khlong Nakha Wildlife Sanctuary , 200–300 m, 2 May 1927, Larsen & Larsen 33585 ( AAU, BKF). Songkhla: Kopah, Ban Krap , Bk. Tinggi , 300 m, 7 November 1917, Haniff & Nur 2728 ( SING).

Nomenclature notes. —Although originally named as P. ovata by Korthals it was never published and therefore the name is invalid. When Miquel (1863) was writing the account for these species using Korthals’ specimens, he did not recognise Pterisanthes as a genus but a section within Vitis , thus he had to find a new name for it and named it Vitis eriopoda Miq.

In his description of this species Miquel (1863) indicated the presence of a specimen collected by Korthals from Sumatra. Two specimens with these characteristics were found in L and we believe they are both duplicates of the type specimen because they were collected by Korthals and the labels indicate the unpublished name given by this author ( P. ovata ). We have selected the specimen with barcode L0715762 as a lectotype because it is the most representative of this species.

In the first description of Pterisanthes coriaceae var. araneosa, King (1896) listed four syntypes, all collected in Perak. One of them was collected by “ King’s collector” (No. 646), while the remaining specimens were collected by Wray (Nos. 2556, 3615, 4621). A specimen was found in the K herbarium supposedly collected by “ King’s collector” but with one of Wray’s collection number mentioned above (No. 4621). The information on the label suggests that this specimen was in fact collected by Hermann Kunstler, who collected for King, as the collection dates, localities and notes match with his known itinerary ( Narayanaswami 1933). It is possible the details on the labels got mixed up at some point as specimens from both collectors were likely sent from the State Museum in Taiping, where Wray was the Curator, to the Botanical Gardens in Calcutta. Regardless , the specimen matches King’s description and we have selected it here as the lectotype. This taxon was later recognised as a synonym of P. eriopoda ( Latiff 1982) .

The synonym P. beccarina was described by Planchon (1887) from a specimen collected by Beccari in Sarawak. We have found three isotypes in FI and we have selected the one with FI herbarium number 2743 (not 2743A or 2743B) to be the lectotype.

Latiff (1982) mentioned the synonym P. polita var. lanceolata , which was described by Ridley (1893) from a specimen collected by Haviland in the Malay Peninsula. Most of Haviland’s collections are in SING and K, however we have been unable to locate a relevant specimen after extensive searches in these and other herbaria. Additionally, we have found no specimens labelled with the above name nor have we found specimens with clearly lanceolate leaves as per Ridley’s (1893) description. Thus, this is a case of incertae sedis as we are unable to confirm the taxonomic status of this taxon.

Figures

FIGURE 1. Distribution map of P. eriopoda based on specimen data.