Skip to main content
This species is accepted, and its native range is India (Kerala).

[KBu]

Nadaf, A.B., Zanan, R.L. & Wakte, K.V. Kew Bull (2011) 66: 183. https://doi.org/10.1007/s12225-011-9265-0

Type
Typus: India, Kerala, Palakkad, alt. 40 – 70 msl, 10°47’95"N, 67°36’94"E, 9 Aug. 2008, Rahul Zanan 19 (pistillate) & 20 (staminate) (holotypusCAL!; isotypi BSI, Pune University Herbarium, SUK).
Morphology General Habit
Large dioecious shrub or small tree, c. 5 – 10 m high, divaricately branched upwards, stem c. 15 – 20 cm in diam.; prop roots absent or rarely present, when present very short at the base of stem; stem erect, rough
Morphology Leaves
Leaves linear, c. 300 × 5 – 7 cm, both margins and midvein spiny with three rows all along leaf; spines sharp, dense, black and pointed; spines at the base 0.4 – 0.5 cm long, crowded towards apex, c. 0.1 cm long at the tip; marginal spines 1 – 1.5 cm apart at the base, 0.7 – 0.1 cm apart at the middle portion and crowded towards the apex; midvein spines 2 – 2.5 cm apart at the base, 1.5 – 2 cm apart at the middle
Morphology Reproductive morphology Inflorescences
Staminate inflorescence terminal, compound spike; spathe 100 – 120 cm long; bracts 9 – 10, yellowish, linear, lanceolate with variable length, margin and midrib prickled, moderately fragrant; staminate spike 6 – 15 × 2 cm, cylindrical; androphore 0.6 – 0.8 cm long, stemonophore 0.3 – 0.4 cm long with 8 – 10 stamens; stamens 0.3 – 0.4 cm long; filaments 0.1 cm long, arranged in pairs; anther 0.2 – 0.3 cm long
Morphology Reproductive morphology Fruits Infructescences
Infructescence terminal, 1 – 2 fruits per infructescence, a solitary syncarp, 45 – 55 × 10 – 12 cm, cylindrical, bracteate, bracts 7 – 9, linear, lanceolate with variable length, margin and midrib prickled; drupes 1500 – 1600 per infructescence, 3 – 4 × 1 – 1.3 cm, hexagonal, pileus flat, smooth; style 0.75 – 1 cm long, almost at right angle to the pileus, bony, brownish; stigma 0.5 – 0.7 cm long, sharp with oblique apex, brown; endocarp median, obconical, broadly truncate, concave on either side, endocarp with distinctly elevated shoulders, central projection of endocarp attached to stigma, 1 – 1.2 × 0.8 – 0.9 cm, 0.2 – 0.25 cm thick with 0.7 – 0.8 cm long tip attached to pileus; mesocarp fibrous, apical mesocarp 0.7 – 0.8 cm thick, 1.3 – 1.5 cm thick at base
Morphology Reproductive morphology Seeds
Seeds 1 per locule, ellipsoid, 0.8 – 0.9 × 0.3 – 0.4 cm
Distribution
Southern India.
Ecology
Growing along the margins of paddy fields and on the banks of streams; 40 – 70 m. The region receives average annual rainfall of 225 – 275 cm, mostly during the months of June to Sept.
Conservation
The Palakkad district harbours a high number of endemic species (55; Reddy et. al. 2007). Pandanus palakkadensis is restricted to the type locality and using the IUCN Red List Categories and Criteria (IUCN 2001) it is given a preliminary conservation assessment of Critically Endangered (CR B2ab). The locality is affected by shifting cultivation practices and is also used for the rearing of ducks for which plants are removed. Hence the species is in urgent need of conservation.
Phenology
Flowering and fruiting July to Oct.
Note
Pandanus palakkadensis is distinct in having drupe with a flat pileus, a broadly truncate endocarp that is concave on either side with distinctly elevated shoulders, a sharp obliquely pointed stigma and cylindrical fruit. At maturity the mesocarp and endocarp falls down leaving behind the axis attached to the plant. The new species is closely related to Pandanus canaranus and P. furcatus. The characters separating the three species are summarised in Table 1.

>

[KBu]
Use
The species is used as a hedge plant along the margins of paddy fields to protect the crop. The male inflorescence is fragrant.

Native to:

India

Pandanus palakkadensis Nadaf, Zanan & Wakte appears in other Kew resources:

First published in Kew Bull. 66: 183 (2011)

Accepted by

  • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP Database) The Board of Trustees of the Royal Botanic Gardens, Kew.

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. 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 Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0