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Oleandra musifolia (Blume) C.PreslFamilyOleandraceae NomenclatureOleandra musifolia (Blume) C.Presl, Epimel. Bot.: 42. 1851 [‘1849’]; Bedd., Handb. Ferns Brit. India: 287. 1883; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 284. 1940; Ching, Fl. Reipubl. Popularis Sin. 2: 321. 1959; Holttum, Dansk Bot. Ark. 23: 235. 1965; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 78. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 181. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 175, 239. 2000. – Aspidium musifolium Blume, Enum. Pl. Javae: 141. 1828. DescriptionRhizome long creeping with long stiff prop roots, up to 5 mm diam., bearing a few fronds in scattered tufts, densely scaly throughout; scales appressed, lanceolate, round to moderately acute at basal edge, gradually narrowing from the broadest attached portion to tailed apex, about 7 by 1.2 mm, brown with dark attached point, paler and hairy at margin of apical portion. Fronds simple. Stipes usually short, up to 5(–8.5) cm including phyllopodia to 2 cm (very exceptionally to 6.5 cm) tall, bearing both scales and hairs. Laminae linear-lanceolate, caudately acuminate at apex, gradually narrowing towards narrow and cuneate base, up to 80 by 5 cm, the margin entire and usually plane; midrib raised below, scaly with peltate, lanceolate, pale brown scales of up to 3 mm long, herbaceous, light green; veins once or twice forked near midrib, all free, ending just inside narrow cartilaginous margin; glabrous to sparsely hairy above and beneath, glabrous to densely hairy at margin. Sori irregular row near midrib; indusia up to 2 mm in breadth, glabrous (exceptionally sparsely hairy ). Distribution in ThailandNORTHERN: Chiang Mai, Lamphun, Phrae, Tak, Phitsanulok; NORTH-EASTERN: Phetchabun, Loei; SOUTH-WESTERN: Kanchanaburi; CENTRAL: Nakhon Nayok; SOUTH-EASTERN: Chanthaburi; PENINSULAR: Ranong, Phangnga. Distribution in LaosChampasak. Wider DistributionSri Lanka, Indochina to Malesia. EcologyOn tree trunks, in crevices of rocks, or on Sphagnum-bog in sunny places in light shade at 1100– 1500 m alt. Proposed IUCN Conservation AssessmentLeast Concern (LC). This species is widespread and not under any known threat. Voucher specimens - ThailandMiddleton et al. 5062, Phitsanulok, Phu Hin Rong Kla National Park (E). Voucher specimens - LaosLamxay et al. 1940, Champasak (E) Habitat Habit Habit Habit Whole plant Rhizome Rhizome scales Articulartion between stipe and phyllopodium Venation Scales on lamina midrib beneath Lower surface of lamina and sori Lower surface of lamina and sori Sori |
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