Many studies have been presented about leaves
indumentum of Teucrium species.
Indumentum tomentose, constituted of trichomestector, thin, whitish, soft, erect and adpressed, uniform, c.
Pubescence Glabrous to glabrescent in Glabrous in both the adaxial surface adaxial and Glabrescent to pubescent in abaxial surfaces the abaxial surface Presence of flake Absence of flake
indumentum indumentum, or scarce and deciduous generally ephemeral.
In fully expanded leaves (or adults), the
indumentum is always present on the abaxial face; however, on the adaxial face, the
indumentum is present only in clades Blanchetia + Gorceixia, Heterocoma, Minasia, Piptolepis, Proteopsis, and in species Eremanthus leucodendron and Lychnophora santosii in clade 'Bahian Lychnophora' (Figs.
The taxon is characterized by the presence of a peculiar
indumentum, composed principally of 0.1 mm long, glandular, orange-colored trichomes present on the branches, stipules, petiole, rachis and inflorescence.
Guzmania kareniae can be distinguished from the nearly sympatric Guzmania squarrosa by having the
indumentum of trichomes on the bracts and foliage appressed and inconspicuous (versus conspicuously "scurfy" on G.
The occurrence and localization of crystals resembling cystoliths, the characteristics of the
indumentum, the density of stomata anda particular anatomy similar to Kranz in some species, were useful diagnostic characters.
Many of these have unusual leaves, covered with a thick 'suede' pelt called
indumentum and the outstanding young growths look like beautiful silver candles over the whole shrub.
Leaflet
indumentum (i) glabrous, (ii) ciliate, and (iii) hairy.
It is characterized by digitate leaves with lepidote
indumentum, flowers with bilabiate calyx, lepidote and corolla yellow with red or brown nectar guides on the fauces.
Leaves elliptic to broadly elliptic, 14 * 20 mm long, some cuneate at base, petioles 4-7 mm long in mature leaves,
indumentum short velutinous when young, pubescent with age.