Friday, July 28, 2023

[Botany • 2023] Lepidagathis dalzelliana (Acanthaceae: Barlerieae) • A New Species from the Northern Western Ghats of India


Lepidagathis dalzelliana S. More, Mane, M. Sawant & H.S. Bhosale, 

in More, Mane, Sawant et Bhosale, 2023. 

Lepidagathis dalzelliana sp. nov., (Acanthaceae: Barlerieae), is described from Maharashtra, India. The new species is closely allied to Lepidagathis clavata Dalzell. in appearance, but differs by long lanceolate, hairy bracts, and spatulate, oblanceolate to ovate-lanceolate glabrous leaves. Colored photographs and notes are provided to facilitate its distinction from closely allied species. In addition, we have designated the lectotype for the name Lepidagathis prostrata Dalzell.

Key words:  Acanthaceae, India, Plateau, Barlerieae

Lepidagathis dalzelliana sp. nov.
  a - Habit, b - Spike close up, c - Style and ovary, d - Capsule, e - Seed, f - Flower, g - Vegetative twig showing leaves, h - Bracts abaxial and side view, i - Bracteoles, j - Sepals
(Photographs © Sushant More & Rohit Mane).
 
Lepidagathis dalzelliana S. More, Mane, M. Sawant & H.S. Bhosale sp. nov.

Lepidagathis dalzelliana sp nov. is morphologically allied to L. clavata Dalzell. but can be distinguished by leaves broadly oblanceolate to ovate-lanceolate, base attenuate (versus leaves oblong-lanceolate, base truncate), terminal, axillary, 3-4 cm long, elongated or pyramidal shaped spikes (versus terminal, 7-8 cm long, oblong or clavate spikes),floral 2.5 - 3cm. long, lanceolate, sterile ca. 3.5 - 3.9 cm long, ovate-lanceolate, hairy bracts (versus floral 1-1.5 cm. long, ovate, hairy, sterile 1.8-2 cm long, lanceolate, plicate, glabrous bracts).

Etymology: The new species is named after Nicol Alexander Dalzell conservator of forests and superintendent of the Botanical Gardens in the Bombay Presidency, to honour his work and contributions to the field of the botany of Western Maharashtra.


 Sushant More, Rohit Mane , Mandar Sawant and Harshal Bhosale. 2023. Lepidagathis dalzelliana (Acanthaceae), A New Species from the Northern Western Ghats and Lectotypification of the Name Lepidagathis prostrata Dalzell. International Journal of Advanced Research. 11(6); 907-911. DOI: 10.21474/IJAR01/17143