glands absent. Assimilatory tissue in the axis chlorenchymatous. Poricycle formed of bast fibres. Medullary rays 1-2 seriate. Pith formed of thick-walled cells.
Indigofera argentea Barm.— Epidermal cells tabular. Meso- phyll isobilateral. Veins embedded and enclosed in bundle-sheaths. Tannin sacs in the middle of the mesophyll, in cortex and pith. Clothing hairs in the form of two-armed trichomes. External glands absent. Assimilatory tissue in the axis chlorenchymatous. Pericycle formed of bast fibres. Medullary rays uniseriate. Pith formed of thin-walled cells.
Indigofera anabaptista Steud,— Epidermal cells tabular. Me- sophyll isobilateral. Veins embedded and enclosed in bundle-sheaths. Tannin sacs in the middle of the mesophyll, in cortex and pith. Clothing hairs in the form of two-armed trichomes. External glands abseut. Assimilatory tissue in the axis chlorenchymatous. Pericycle formed of bast fibres. Medullary rays uniseriate. Pith formed of thick-walled cells.
Psoralea odorata Blatt. and Hall.— Figs. 108. Epidermal cells tabular. Mesophyll isobilateral. Veins vertically transcurrent by means of colourless parenchyma and enclosed in bundle-sheaths. Tannin sacs found near the veins and in the soft bast. Intramural glands found in the leaf. Clothing hairs appressed and muriculate. External glands club-shaped. Assimilatory tissue in the axis chloren- chymatous. Pericycle formed of bast fibres. Medullary rays unise- riate. Pith formed of thick-walled cells.
Tephrosia incana Grah. — Epidermal cells tabular. Mesophyll bifacial. Veins vertically transcurrent by sclerenchyma. Veins provided with bundle-sheaths. Clothing hairs in the form of uniseriate trichomes with muriculate walls. Pericycle composed of groups of stone-cells. Tannin sacs in the middle of the mesophyll. External glands absent. Assimilatory tissue in the axis chloren- chymatous. Pericycle formed of stone-cells. Medullary rays uni- seriate. Pith formed of thin-walled cells.
Tephrosia multiflora Blatt. and Hall— -Epidermal cells tabular. Mesophyll bifacial. Veins vertically transcurrent by scleren- chyma and provided with bundle-sheaths. Clothing hairs in the form of uniseriate trichomes with muriculate walls. External glands absent. Pericycle formed of groups of stone-cells. Tannin sacs in the middle of the mesophyll. Assimilatory tissue in the axis chloren- chymatous. Pericycle formed of stone-cells. Medullary rays uni- seriate. Pith formed of thin-walled cells.
Alysicarpus vaginalis DC— Figs. 109, 110, 111. Epider- mal cells tabular with outer walls toothed. Mesophyll bifacial.
