. Elementary plant physiology. Plant physiology. Respiration, Digestion, and Fermentation. 109 ascertain exact location of nectarial organs. A large number will be found in floral structures. \\'ell-developed nectaries may be found outside the floral circles in Passiflora, Cassia, Ricinus, and many species grown in conservatories. Make an examination of the structure of the nectaries. Draw a section made at right angles to the secreting surface, and note structure of secreting cells. Ascer- tain rate of secretion by removing the nectar from a gland and noting length of time neces- sary for its
. Elementary plant physiology. Plant physiology. Respiration, Digestion, and Fermentation. 109 ascertain exact location of nectarial organs. A large number will be found in floral structures. \\'ell-developed nectaries may be found outside the floral circles in Passiflora, Cassia, Ricinus, and many species grown in conservatories. Make an examination of the structure of the nectaries. Draw a section made at right angles to the secreting surface, and note structure of secreting cells. Ascer- tain rate of secretion by removing the nectar from a gland and noting length of time neces- sary for its re- pl ac e ment. Carefully re- move the nec- t a r from another gland, and then wash well with dis- tilled water, and wipe dry by means of a minute por- tion of linen cloth, secretion ? 118. Action of glandular hairs—Examine the glandu- lar hairs of the pansy [Fio/a tricolor^, horse-chestnut {yEscii- ii/s). Primula Sinensis, hop i^Humulus lupuius), and note struc- ture of the glandular organ, and make various tests, including. Fig, 79.—Diagram of flower of Narcissus. «/, nectary; excreted nectar. After Schniewind-Tliies. What effect does it have on the rate of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original MacDougal, Daniel Trembly, 1865-1958. New York, London [etc. ] Longmans, Green, and Co.
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