SEED 60 1 



Sebicea Pierre ex Diels^Tiliacora Colebr. (Menisp.). 



Sebizia Mart. Vitaceae. Nomen. 



Secale (Tourn.) L. Gramineae (12). 2 Medit., Eur., As. S. cereale\^., 

 the rye, is largely cult, in N. Eur. as a cereal, forming a staple food. 

 There are no well-marked races. The hardy winter ryes are the best. 

 Also used as fodder. 



Secamone R. Br. Asclepiadaceae (n. 2). 60 palaeotrop. 



Secamonopsis Jumelle. Asclepiadaceae (n. i). i Madag. 



Sechiopsis Naud. Cucurbitaceae (4). i Mexico. 



SecMum P. Br. Cucurbitaceae (4). i trop. Am., S. edule Sw., cult, 

 for its ed. fr. (chocho), containing one enormous seed. 



Secondary shoots, adv. shoots when primaries occur, Ailantkus, An- 

 thurium, Podostemaceae, Testudinaria, Tristichaceae. 



Secondatia A. DC. Apocynaceae (n. i). 5 trop. S. Am. 



Secretaria Muell.-Arg. (Hyeronyma BH.). Euph. (A. I. i). i Gui. 



-sect, divided to the base. 



Secula Small. Legiiminosae (in. 7). i W.I., Florida. 



Secund, all directed to the one side. 



Secundine, inner coat of ovule. 



Securidaca L. Polygakceae. 32 trop., exc. Austr. Climbers. 



Securigera DC. (Bonavcria Scop.). Leguminosae (in. 5). i Medit. 



Securinega C'omm. ex Juss. Euphorb. (A. I. i). 10 temp, and sub- 

 trop. 



Sedastruru Rose. Crassulaceae. 7 Mexico. 



Seddera Hochst (Breweria p.p.)- Convolvulaceae (i). 6 palaeotrop. 



Sedella Britton et Rose (Seditm p.p.). Crassulaceae. 2 Calif. 



Sedge, Carex,Cyperaceae; cotton-, Eriophorum; sword-; Lepidosperma. 



Sedum Tourn. ex L. Crassulaceae. 150 N. temp., i in Peru; 9 in 

 Brit., incl. S. Telephiuin L. (orpine or livelong), 5". Rhodiola DC. 

 (rose-root), S. anglicum Huds. and 6". acre L. (stonecrop or wall- 

 pepper). Fleshy-leaved xero. Cult. orn. fl. and fol. 



Seed, the product of the ovule after fert. ; it contains the embryo, and 

 if nothing else, is exalbuminons, but may contain reserve material out- 

 side the embryo (albuminous), which may be derived from the interior 

 of the embryo-sac (endosperm), or from tissue outside this (perispertu). 

 Usually mentioned after the fr. in descriptions. In form, &c. it may 

 be large or small ; spherical, ellipsoidal, &c. ; anatr., amphitr., &c. 

 like the original ovule. The testa may be smooth, or covered with small 

 or large tubercles, papillae, granules, ribs, &c. ; green, brown, or of 

 other colours ; thin or thick, woody (as in Bertkolletia), with a fleshy 

 outer layer (as in Bijca, Cycas, Magnolia, Moraea, &c.), hooked or 

 winged (see below), or provided with hairs. It is usu. firm and tough, 

 allowing very little evap. of water from the seed. Its outer cells 

 sometimes have mucilaginous walls and swell when wetted, as in 

 Brassica, Collomia, Liniun, Plantago, &c.; sometimes there are scales 

 or hairs upon it and these swell, as in many Acanthaceae. The testa is 

 usu. marked with a scar, the hilum, where the stalk separated from 

 the seed. 



Many are covered by an extra coat (aril] that is developed like 

 the original integuments, i.e. by a cup-like growth of tissue around 

 the seed from the top of the stalk or rarely from the micropyle. Its 



