Many studies have been presented about leaves indumentum
of Teucrium species.
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.
(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.