. The ferns of Bombay. Ferns. 11 from It. The apices of veins or veinlets are said to be clavate when thickened like a club. Reproductive Organs. 1. Receptacle. The sporangia or spore cases are arranged on a projection of tissue termed the receptacle or placenta. Its position on the frond varies. It may terminate a vein or its branches ; it may be on the point where the veins fork, or on the point of union of two or more veinlets, or on the back of a vein or veinlet. It presents various forms, being a rounded elevation, or more elongated or conical, or very long and filiform or ridge-like. 2.
. The ferns of Bombay. Ferns. 11 from It. The apices of veins or veinlets are said to be clavate when thickened like a club. Reproductive Organs. 1. Receptacle. The sporangia or spore cases are arranged on a projection of tissue termed the receptacle or placenta. Its position on the frond varies. It may terminate a vein or its branches ; it may be on the point where the veins fork, or on the point of union of two or more veinlets, or on the back of a vein or veinlet. It presents various forms, being a rounded elevation, or more elongated or conical, or very long and filiform or ridge-like. 2. Sporangium. (Fig. i).' The sporangia or spore-cases or capsules are the organs which con- tain the reproductive spores (sp.). They are minute roundish oval bodies containing a single cavity and are usually stalked, but *^ sometimes sessile. They are encircled by a com- plete jointed elastic ring termed an annulus (an.) (magnmed)T4^''°i^An3us; or destitute of such «*⢠= staik â sp. = 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 Blatter, Ethelbert, 1877-1934; Almeida, J. F. d' (Joseph Francis). Bombay, D. B. Taraporevala Sons & Co.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectferns, bookyear1922
