Strobilanthes lanata Nees

First published in A.P.de Candolle, Prodr. 11: 191 (1847)
This species is accepted
The native range of this species is SW. India. It grows primarily in the wet tropical biome.

Descriptions

Carine, M., Jake M. Alexander, & Scotland, R. (2004). A Revision of the Strobilanthes kunthiana-Group (Phlebophyllum sensu Bremekamp) (Acanthaceae). Kew Bulletin, 59(1), 1-25. doi:10.2307/4111071

Type
Perrottet 121 in h. mus. Paris n. 143 (P lectotype!; K!, P! isolectotypes).
Morphology Stem
Stem with dense white or tawny coloured woolly indumentum
Morphology Leaves
Leaves ovate to narrowly elliptic, 10 - 125 x 3 - 24 mm; base shortly decurrent, often asymmetrical; apex shortly acuminate; margins entire; abaxial surface with dense tawny woolly indumentum, adaxial indumentum similar on young leaves but receding towards the base with age; veins 6 - 13 pairs, prominent on the abaxial surface, less so on adaxial surface; petiole 0 - 47 mm long, densely pubescent
Morphology Reproductive morphology Inflorescences
Inflorescence of broad uninterrupted spikes, 20 - 67 x 5.5 - 10 mm wide; axis densely pubescent; flowers sessile
Morphology Reproductive morphology Inflorescences Bracts
Bracteoles 5.7 - 10.1 mm long Bracts narrowly ovate to elliptic, 7.5 - 18.5 x 2.8 - 5.0 mm, subequal in length to calyx; apex acuminate; abaxial surface and margins with dense tawny woolly indumentum, adaxial surface glabrous or with woolly indumentum, particularly near apex
Morphology Reproductive morphology Flowers Calyx
Calyx five-lobed, subequal, fused for 0.5 - 0.6 of the total length at anthesis; lobes lanceolate, acuminate, 7.1 - 13.0 mm long; abaxial indumentum as bracts, adaxial surface glabrous or often with simple white hairs and tawny wool near the apex
Morphology Reproductive morphology Flowers Corolla
Corolla blue; tube 4.0 - 6.5 mm; throat campanulate, 15.7 - 20.1 mm; lobes equal, overlapping, ovate to sub-orbicular, ± emarginate, 5.6 - 8.9 x 5.4 - 10.0 mm; outer surface with dense tawny indumentum
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens included; anthers 1.9 - 2.3 mm long; filaments 7.6 - 12.1 mm long, pubescent below for more than half the length
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 1.8 - 2.3 mm long, apex sparsely pubescent
Morphology Reproductive morphology Flowers Gynoecium Style
Style 10.4 - 17.5 mm long, sparsely pubescent
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma 3.4 - 5.6 mm long with short white hairs.
Distribution
India: Karnataka (?), Tamil Nadu
Phenology
Flowering August to January; fruiting unknown.
Note
Strobilanthes lanata is readily distinguished by its broad overlapping spikes that are covered in a dense tawny indumentum, and by the ovate to suborbicular overlapping corolla lobes. It is endemic to the Nilgiris and is known from relatively few wild collections. The type collection of Lobb has the locality 'Mysore'. However, it seems unlikely that this species occurs in Karnataka as all other wild collections were made in the vicinity of Sispara, Tamil Nadu. Gamble (1888) reported that S. lanata was abundant in Sispara, and the paucity of collections in herbaria probably reflects a semelparous life history strategy for this species. A thirteen-year flowering cycle seems plausible.
[KBu]

Uses

Use
The attractiveness of this species has led to its cultivation both in the Nilgiris and also elsewhere.
[KBu]

Sources

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Bulletin

    • Kew Bulletin
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0