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sporangiophores's Usage Examples:

In Sphenophyllum fertile both the ventral lobes of the sporophyll (corresponding to the sporangiophores in other species) and the dorsal lobes, which in other species are sterile, were developed as peltate sporangiophores.

The overlapping bracts afforded protection to the sporangia, which were borne on sporangiophores springing from the upper surface of the coherent bracts near their origin from the axis; two sporangiophores usually arose from each bract, and sometimes adhered to its upper surface for some distance.

There is a close resemblance between these sporangiophores and those of Equisetum, but as a rule only four sporangia were borne on each.

In some the sporangiophores stood midway between the sterile whorls, while in others they approached the whorl above or below.

In the other Calamarian strobili known the whorls of sporangiophores are separated by whorls of bracts.

This similarity is closest in Archaeocalamites, an ancient type found in Upper Devonian rocks; in this the strobilus consists of peltate sporangiophores inserted in whorls on the axis.

The stamens of Araucaria and Agathis are peculiar in bearing several long and narrow free pollen-sacs; these may be compared with the sporangiophores of the horsetails (Equisetum); in Taxus (yew) the filament is attached to the centre of a large circular distal expansion, which bears several pollen-sacs on its under surface.

A, B, Section of Leaf of Potato F, G, H, J, Further development with sporangiophores of Phy- of the sporangia.

Such may be termed sporangiophores.

According to the characters of the last, we might theoretically divide them into conidiophores, sporangiophores, gametophores, oidiophores, 'c. but since the two latter rarely occur, and more than one kind of spore or spore-case may occur on a sporophore, it is impossible to carry such a scheme fully into practice.

sporangiophores's Meaning':

stalk bearing one or more sporangia

Synonyms:

stem, stalk,

Antonyms:

rear, ride,