Lindsaea ensifolia Sw., J. Bot. (Schrader) 1800(2): 77 1801. (syn: Schizolegnia ensifolia (Sw.) Alston; Schizoloma ensifolium (Sw.) J.Sm.; Schizoloma ensifolium var. normale Domin; Adiantum ensifolium (Sw.) Poir.);
Tropical & Subtropical Old World: Andaman Is., Assam, Bangladesh, Bismarck Archipelago, Cambodia, Cape Provinces, Caroline Is., China South-Central, China Southeast, East Himalaya, Gabon, Ghana, Guinea, Hainan, India, KwaZulu-Natal, Laos, Lesser Sunda Is., Madagascar, Malaya, Maluku, Mauritius, Mozambique, Myanmar, Nansei-shoto, Nepal, New Guinea, Nicobar Is., Nigeria, Northern Territory, Philippines, Queensland, Réunion, Seychelles, Solomon Is., Sri Lanka, Sulawesi, Sumatera, Taiwan, Tanzania, Thailand, Vietnam, Western Australia as per POWO;
Terrestrial herb with creeping rhizome, 2 mm thick. Scales 1.5 x 0.1-0.2 mm, linear, entire, acuminate, dark brown uniformly thickened. Fronds 40 x 10-15 cm, simply pinnate; stipe 18-20 x 0.2-0.25 cm, glabrous, dark brown to pink, polished; pinnae 10-12 x 0.7-1.2 cm, oblong-acuminate, subsessile, obliquely cuneate at base, serrate at distal non soral part, alternate, except the basal pinna; veins anastomosing, costa prominently raised beneath. Sori linear, 8-9.5 cm long, yellowish brown; indusia translucent. Sporangial capsule 250 x 150 µm subglobose, stalk 250 µm long. Spores 37.5 x 25 µm, trilete, yellowish, granulose.
Growing in all habitats from coastal plains to forests.
(Attributions- K. P. Rajesh as per India Biodiversity Portal)
fern for id ? Lindsaea ensifolia: 6 images.
Date- 22 Jan 22
Location- South-west Maharashtra. western ghat hills.
Habitat- Wild. Terrestrial. On bank of stream.
Plant Habit- Herb. in small colonies/ single.
Height: Upto 25cm.
- Rhizome: Long creeping, densely scaly. Scales appressed, narrow, reddish brown.
- Stipe- chestnut colored, 10-30 cm, quadrangular.
- Lamina- Oblong, 25×10 cm, herbaceous, 1-pinnate.
- Pinnae- 4 pairs, subopposite at base, alternate apically, narrowly lanceolate, short stalked, base broadly cuneate, margin entire/serrate in sterile pinnae, apex acuminate. Terminal pinnae similar to lateral ones.
- Veins- Anastomosing, uniting to form 2 rows of areoles along each side of costae, other veins free, visible on both surfaces.
- Scales- Very narrow.
- Sori: Marginal, terminal on veinlets. Indusia linear, continuous, attached only at base.
I feel it is- L. ensifolia: Lamina 1-2 pinnate. Terminal pinna similar to lateral ones.
(In L. heterophylla: No terminal pinna. Upper pinnae gradually become smaller into a coadunate apex).
Above are the notes I have compiled from the internet. The bold letters indicate the characters comparable to my photos.
Yes, typical Lindsaea ensifolia, as you worked out. Common and distinctive – and typical of Lindsaea with the indusia opening outwards.
? Bolbitis sp.: 2 images.
Date- 20 Feb 22
Location: North Goa, Chorla ghat. on earth cuttings near road in colonies.
height- upto 25cm.
Isn’t it Lindsaea ensifolia?
To me also appears close to images at Lindsaea ensifolia
POWO Catalogue of Life The Plant List Ver.1.1 Tropicos IPNI GBIF (High resolution specimens) Flora of China FOC illustration Flora of Zimbabwe Flora of peninsular India India Biodiversity Portal pteridoportal