Aponogeton nudiflorus Peter

First published in Abh. Preuss. Akad. Wiss., Phys.-Math. Kl., n.f., 13(2): 40 (1928)
This species is accepted
The native range of this species is Ethiopia to Tanzania. It is a tuberous hydrogeophyte and grows primarily in the seasonally dry tropical biome.

Descriptions

M. Thulin et al. Flora of Somalia Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology Leaves
Leaf-blades ± long-petiolate, floating, narrowly ovate to narrowly oblong, 2–13 x 0.3–4.5 cm, acute to obtuse at the apex, cuneate to truncate at the base
Morphology General Habit
Dioecious
Morphology Reproductive morphology Inflorescences
Spikes 2-branched, pedunculate; male spikes relatively lax, c. 10–80 x 2–5 mm; female spikes dense, 10–50 x 4–8 mm
Morphology Reproductive morphology Flowers
Male flowers with 2 white or cream tepals and usually 6 stamens Female flowers without tepals, with 3, 3–6-ovulate carpels
Morphology Reproductive morphology Fruits
Follicles 3–4 mm long including 1–1.5 mm long beak
Morphology Reproductive morphology Seeds
Seeds 1.5–2 x 0.4–0.7 mm.
Distribution
N1, 2; S1; E Ethiopia, Kenya, N Tanzania
Ecology
Altitude range 200–1000 m.
[FSOM]

Aponogetonaceae, K.A. Lye (Agricultural University of Norway). Flora of Tropical East Africa. 1989

Morphology General Habit
Plants dioecious.
Vegetative Multiplication Tubers
Tuber globular, oval or irregularly shaped, brown or yellowish brown, 8–30 mm. long and 8–20 mm. thick, with numerous brownish roots in upper part.
Morphology Leaves
Leaves usually many; petiole 5–40 cm. long and 0.5–2 mm. thick, but sometimes wider at the pale or pinkish sheathing base; blade floating on the surface of the water, oblong to oblong-lanceolate (rarely linear-lanceolate), 2–13 cm. long and 0.3–4.5 cm. wide, base cuneate to truncate, tip blunt or acute; midrib distinct and with 2–4 parallel main nerves on each side of the midrib.
Morphology Reproductive morphology Flowers
Flowers white or yellowish white, set in bifid spikes with flowers facing in all directions; peduncles 15–50 cm. long and 0.5–3 mm. thick, greenish, but paler below, not thickened towards the inflorescence; spathes 3–20 mm. long, green to greyish, rather long-persistent.
Morphology Reproductive morphology Inflorescences
Male spikes relatively laxly flowered, usually 1–8 cm. long and 2–5 mm. wide, consisting of tepals and stamens. Female spikes densely flowered, 1–5 cm. long and 4–8 mm. wide, consisting of ovaries only.
sex Male
Male spikes relatively laxly flowered, usually 1–8 cm. long and 2–5 mm. wide, consisting of tepals and stamens.
sex Female
Female spikes densely flowered, 1–5 cm. long and 4–8 mm. wide, consisting of ovaries only.
Morphology Reproductive morphology Flowers Tepal
Tepals 2 in ♂ flowers, absent in ♀ flowers, white or cream, 1.5–3 mm. long, ligulate, broadly ovate or obovate, 1-nerved.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens usually 6, rarely 7–8, ± as long as the perianth; filaments white, hardly widened towards the base; anthers green to yellow, turning blackish with age.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovaries 3, greenish, with 3–6 ovules.
Morphology Reproductive morphology Fruits
Follicles green to brown, 3–4 mm. long and 1–2 mm. wide including a 1–1.5 mm. long narrow beak.
Morphology Reproductive morphology Seeds
Seeds 1.5–2 mm. long and 0.4–0.7 mm. wide, greyish with paler longitudinal ribs; testa double.
Habitat
In shallow lakes, seasonal pools, ponds and rivers; 420–1200 m.
Distribution
K1 K3 T2 T3
[FTEA]

Sources

  • Flora of Somalia

    • Flora of Somalia
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2022. 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 Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2022. 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