GLOSSARY OF BOTANICAL TERMS. 



425 



Septate. — Possessing septa or partitions. 



Septicidal. — Applied to that form of cap- 

 sular dehiscence in which the opening 

 takes place along the line of junction of the 

 carpels. 



Septifragal. — Applied to that form of cap- 

 sular dehiscence in which the opening 

 takes place lengthwise along the middle of 

 each carpel. 



Septum. — A partition, as the membrane or 

 wall which separates adjacent loculi in an 

 ovary. 



Sericeous. — With a pubesence of very fine, 

 appressed, silky hairs. 



Serrate. — Toothed with sharp teeth pro- 

 jecting forward like the teeth of a hand- 

 saw. 



Serrulate. — Serrate with minute teeth. 



Sessile. — Not stalked; inserted directly 

 on the axis, as when a leaf-blade is at- 

 tached directly to a stem. 



Seta. — A bristle. The stalk of the capsule 

 in Mosses. 



Setaceous. — Bristle-shaped. 



Setiform. — Bristle-like in shape. 



Setigerous, or Setiferous. — Bearing 

 bristles or stiff hairs. 



Sheath. — Applied to the bases of leaves 

 like those of grasses, that ensheath the 

 stem. See also Medullary Sheath. 



Sieve Tissue. — A cellular tissue made up 

 of thin-walled cells which possess areas 

 with sieve-like markings. The tissue is 

 characteristic of the phloem. 



Sigillate. — Marked as if with a seal. 



Silicle. — A shortand broad silique. 



Silique. — The slender, two-valved capsule 

 of some Cruciferae. It is divided into cells 

 by a false partition stretched between two 

 opposite parietal placentae, and which 

 often persists after the valves have fallen 

 away. 



Sinuate. — Wavy; winding in and out. Ap- 

 plied to the margins of leaves and other 

 flattened organs. 



Soboliferous. — Bearing vigorous shoots. 



Sokedium. — One or more algal cells wrapt 

 in hyphae and discharged from the fronds 

 of Lichens, serving the purposes of vegeta- 

 tive propagation. 



Sorosis. — A fruit like that of the Mulberry, 

 which consists of a collection of small 

 fleshy fruits, the product of a compact 

 flower-cluster. 

 Sorus. — The name applied to the fruit dot 

 or collection of sporangia of the Ferns. 



Spadix. — A fleshy spike, commonly envel- 

 oped in a spathe. 

 Spathaceous, or Spadiceous. — Furnished 



with a spathe, or resembling a spathe. 

 Spathe. — A peculiar bract, often large and 

 colored, which subtends or envelops a 

 spadix. 

 Spatulate. — Resembling an old-fashioned 

 spatula in outline. Applied to leaves and 

 other flattened organs. 

 Spermatium. — A non motile male gamete, 

 such as those produced by the red marine 

 Algae. 

 Spermatozoid. — The same as Antherozoid. 

 Spermoderm. — The same as Episperm; the 



outer covering of the seed. 

 Spermaphore. — The same as placenta. 

 Spermogonium. — A receptacle in which 



spermatia are developed. 

 Sphaeraphides. — Clusters of needle- 

 shaped crystals arranged in spherical 

 masses. The term is extended to include 

 other crystalline masses having a some- 

 what rounded shape. 

 Spike. — That form of indeterminate antho- 

 taxy in which the flowers are sessile, or 

 nearly so, and arranged on a lengthened 

 axis. 

 Spicate. — Disposed in spikes. 

 Spine. — A thorn; either a sharpened, hard 

 and usually leafless branch, or a leaf or a 

 part of one that has a sharpened and rigid 

 form. 

 Spinose, or Spinous. — Possessing thorns; 



or shaped like a thorn. 

 Spiral Duct. — A duct whose wall has a 



spiral thickening on its interior surface. 

 Spongiole. — A name formerly applied to 

 the spongy tissue of the root-tip, on ac- 

 count of its supposed property of sucking 

 up moisture like a sponge. 

 Sporangiophore. — The modified leaves in 

 the Equisetineae which produce sporangia 

 on their inner surface. 

 Sporangium. — A spore-case enclosing asex- 

 ual spores. 

 Spore. — The term applied to the free repro- 

 ductive cells of cryptogams. They may 

 be sexual or asexual, motile or non-motile. 

 A spore produced by the conjugation of 

 two like cells is called a zygospore; the 

 sexual spores produced in oogonia are 

 called oospores ; and those produced in 

 carpogonia, carpospores. Spores endowed 

 with locomotive powers are often called 

 zoospores and sivarm-spores. The smaller 



