THE
Journal of Indian Botany.
Vol. II. JANUARY, 1921. Nos. 1 & 2.
THE PHYSIOLOGICAL ANATOMY OF THE
PLANTS OF THE INDIAN DESERT
BY
T. S. Sabnis, B.A., M.Sc.
St. Xavier's College, Bombay.
{Continued from Vol, 1, p. 287.)
COMPOSITAE
Vernonia cinerascens SchulL— Figs. 163, 164, 165, 166. Woody. Mesophyll isobilateral. Stomata depressed. Clothing hairs two-armed. Glandular hairs consisting of a spherical head and of a stalk-cell or of a short stalk. Collenchyma not developed in cortex. Wood com- posite. Medullary rays 1-3 seriate. Pith formed of lignified cells.
Pegolettia senegalensis Cass.— Figs. 167, 168, 169, 170. Herbaceous. Mesophyll composed of arm-palisade cells. Clothing J hairs absent. Glandular hairs depressed, biseriate and spherical. I Stomata elevated or depressed. Bundles of acicular crystals found near j veins, in cortex and in pith. Collonchyma not doveloped in cortex. Wood composite. Medullary rays uniseriate. Endodermis formed of V, thin-walled cells. Pith consisting of thin-walled cells.
Pulicaria angustifolia DC— Figs. 171, 172. Herbaceous. I Stomata elevated. Mesophyll consisting of arm-palisade cells. Clothing hairs in the form of flagellum trichomes. Glandular hairs depressed, biseriate and spherical. Collenchyma subepidermal. Wood composite L and deeply lobed on the inner side. Pith formed of thin-walled calls.
Pulicaria rajputanae Blatt. and Hall— Figs. 173, 174, 175, 176, 177. Woody. Stomata depressed. Mesophyll isobilateral. Secretory
