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| Cremanthodium indicum D.Borah, R.Kr. Singh & Thungon, in Borah, Singh & Thungon, 2021. |
Abstract
Cremanthodium indica D.Borah, R.Kr. Singh & Thungon (Asteraceae, Senecioneae), a new species from Eastern Himalayan state Arunachal Pradesh, India is described and illustrated. The new species is allied to Cremanthodium nobile (Franch.) Diels ex H.Lév. in having elliptic-obovate basal leaves, solitary, nodding capitula and hemispheric involucre, but differs by densely pale yellow tomentose stem, stem leaves 5–9, 1.6–2.1 cm distant, outer phyllaries 2.3–2.8 mm wide, inner phyllaries elliptic, 3–5 mm wide, apex acute, ray lamina creamy, oblong, 2–2.3 cm long, apex truncate, distinctly 3-dentate, ray tube 1.5–2 mm long, tubular florets creamy, 8–9 mm long and pappus 6–8 mm long.
Keywords: Alpine, Cremanthodium nobile, Himalaya, novelty, Penga-Teng Tso Lake, Tawang District
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| Cremanthodium indicum D.Borah, R.Kr. Singh & Thungon. A. Habitat, B. Habit, C. Capitula, D. Front view of Capitula, E. Back view of Capitula. |
Cremanthodium indicum D.Borah, R.Kr.Singh & Thungon, sp. nov.
Diagnosis: The new species superficially resembles Cremanthodium nobile (Franch.) Diels ex H.Lév.in having elliptic-obovate basal leaves, solitary, nodding capitula and hemispheric involucre, but differs bydensely pale yellow tomentose stem (versusdensely purplish-black pilose), stem leaves 5–9,1.6–2.1 cm distant(versus 2–5,4.2–7.5 cm),outer phyllaries2.3–2.8 mm wide (versus 3–4 mm), inner phyllaries elliptic, 3–5 mm wide, apex acute (versusbroadly oblong, 5–8 mm, acuminate), ray lamina creamy, oblong, 2–2.3 cm long, apex truncate, distinctly 3-dentate (versus bright yellow, narrowly lanceolate or narrowly elliptic, 2.5–3.5 cm,acuminate or acute, shallowly 3-denticulate), ray tube 1.5–2 mm long (versus 3–3.5 mm), tubular florets creamy, 8–9 mm long (versus bright yellow, 5–6 mm) and pappus 6–8 mm long (versus 3.5–4 mm).
Distribution: The new species is apparently endemic to Tawang District of Arunachal Pradesh state, India.
Etymology: The specific epithet ‘indica’ refers to the country of origin India.
Dipankar Borah, Rajeev Kumar Singh and Lobsang Tashi Thungon. 2021. Cremanthodium indica (Asteraceae, Senecioneae), A New Species from the Eastern Himalaya, India. Biodiversitas: Journal of Biological Diversity. 22(3); 1272-1276. DOI: 10.13057/biodiv/d220324
