Indumentum of Echium vulgareCaducous hairs on a developing pitcher of Nepenthes chaniana
In biology, an indumentum (Latin, literally: "garment") is a covering of trichomes (fine "hairs") on a plant[1] or of bristles (rarely scales) of an insect.[citation needed]
In plants, indumentum types include:
pubescent
hirsute
pilose
lanate
villous
tomentose
stellate
scabrous
scurfy
Further information: Trichome
The indumentum on plants can have a wide variety of functions, including as anchorage in climbing plants (e.g., Galium aparine), in transpiration control, in water absorption (Tillandsia), the reflection of solar radiation, increasing water-repellency (e.g., in the aquatic fern Salvinia), in protection against insect predation, and in the trapping of insects (Drosera, Nepenthes, Stylosanthes).
The use of an indumentum on insects can also be pollen-related, as on bees, sensory like whiskers, or for varied other uses including adhesion and poison.[citation needed]
Rust-colored indumentum on the underside of a bog Labrador tea (Rhododendron groenlandicum) leaf
^Davis, Peter Hadland and Heywood, Vernon Hilton (1963) Principles of angiosperm taxonomy Van Nostrandpage, Princeton, New Jersey, page 154, OCLC 552236
In biology, an indumentum (Latin, literally: "garment") is a covering of trichomes (fine "hairs") on a plant or of bristles (rarely scales) of an insect...
emerging from buds of Oldenburgia grandis are densely tomentose with a dense indumentum, but their upper surface is glabrescent; as seen here they lose their...
scales, and papillae. A covering of any kind of hair on a plant is an indumentum, and the surface bearing them is said to be pubescent. Certain, usually...
Astragalus anemophilus, but the two species can be distinguished by their indumentum and distinct flowers. Astragalus harbisonii was described by botanist...
the Dayak word for the orang-utan of Borneo, referring to the brownish indumentum. Palaquium majas grows up to 24 metres (80 ft) tall. The bark is brown...
the Salix genus generally contain denser indumentum than leaves that are produced later in the season. Indumentum refers to hairs that are red or brown in...
5–11 by 3.6–4.6 cm in size. When young the leaves are covered in a white indumentum, which falls off the upper surface but remains on the underside. The flowers...
yakushimanum – flowers pink fading to white, leaves with white indumentum on top, white to tan indumentum on bottom The highly variable subspecies R. degronianum...
marked by conspicuous leaf scars—the upper parts are clothed in a brown indumentum. The leaves are simple and without stipules. They have a blunt obtuse...
the others. The leaf margin is serrated. The leaf surface has a villous indumentum of stellate hairs. The flowers are borne on multi-flowered peduncles....
specific epithet rufolanigerum means "reddish woolly", referring to the indumentum. Palaquium rufolanigerum grows up to 30 metres (100 ft) tall. The bark...
Sapotaceae. The specific epithet sericeum means "silky", referring to the indumentum. Palaquium sericeum grows up to 22 metres (70 ft) tall. The bark is reddish...
= 7.8%). Most parts of the plant are virtually glabrous. However, an indumentum of short brown hairs is present on inflorescences, developing parts, and...
(2 in) long flowers. The thick fused calyx is covered by a brown hairy indumentum and the fused calyx tube is the same length as its calyx lobes, except...
undersides of the leaves are covered with scales (lepidote) or hairs (indumentum). Some of the best known species are noted for their many clusters of...
specific epithet fulva is from the Latin meaning "tawny", referring to the indumentum. Castanopsis fulva grows as a tree up to 25 metres (80 ft) tall with a...
the discovery of a new form of N. hamata with an exceptionally dense indumentum: Thought people might be interested to see this stunning new variety of...
and dissected. In most species, the leaves are covered in fine hairs or indumentum, which normally contain essential oils. Flowers are contained in whorls...
2023-10-10. Munsamy, A., & Naidoo, Y. (2017). Characterisation of the indumentum and the laticifers in the leaves and stems of Gomphocarpus physocarpus...
the plantain family Plantaginaceae. It gets its name due to the woolly indumentum of the leaves. D. lanata, like other foxglove species, is toxic in all...
seeds are filiform. They are pale brown and around 7 mm long. A sparse indumentum of simple, reddish-brown hairs is present on certain vegetative parts...
leaf axils of a basal rosette, with simple indumentum of long, patent setae. Leaves acute, with simple indumentum of more or less patent setae; those at the...
branches are quadrangular in section, the younger shoots covered in a dense indumentum. The opposite lanceolate leaves are 7–13 cm (3–5 inches) long, tomentose...
specific epithet ferrugineum means "rusty coloured", referring to the indumentum. Palaquium ferrugineum features twigs that are reddish brown tomentose...
specific epithet rufescens means "becoming reddish", referring to the indumentum of the inflorescences, twigs and leaves. Helicia rufescens grows up to...
15-ft spread. The leaves are large and deep green, but lack the brown indumentum on their undersides which make other cultivars so distinctive. 'Angustifolia'...
cinerescere, to turn into ashes) meaning ash-coloured, referring to the indumentum on the leaves. There are 5 varieties: V. cinerascens var. cinerascens...
with the closely related Gambeya albida. Both species have similar leaf indumentum and are widespread in the Lower and Upper Guinea forest mosaic. Species...
1997, it is characterized by its pendulous inflorescences, white woolly indumentum, and ovoid fruits. This species thrives in rainforest environments with...
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