SEX DISTRIBUTION 605 



Seringia J. Gay. Sterculiaceae. i E. Austr., New Guinea. 



Serinia Rafin. (Krigia BH.}. Compositae (13). 3 S. U.S. 



Seriola L. = Hypochoeris L. p.p. (Comp.). 



Seriphium L.= Stoebe L. (Comp.). 



Seris Less. Compositae (12). 3 campos of S. and E. Brazil. 



Serissa Comm. ex Juss. Rubiaceae (n. 7). i China, Japan, cult. 



medicinal. 

 Serjania Plum, ex Schum. Sapindaceae (i). 175 warm Am. Lianes 



with watch-spring tendrils and stip. 1. Fr. a 3-winged schizocarp. 

 Serotinus (Lat.), late in the season. 



Serpicula L. Haloragidaceae. 3 trop. and subtrop. Land or marsh pi. 

 Serrafalcus Parl. = Bromus L. p.p. (Gramin. ). 



Serrastylis Rolfe (Macradenia p.p.EP.). Orchid. (n. 18). i Colombia. 

 Serrate, margin with small teeth pointing forward ; cf. Leaf, Fig. B. 

 Serratula Dill, ex L. Compositae (i i). 40 Eur. to Japan. S. tinctorial. 



(saw-wort) in Brit, is dioec. 

 Serresia Montr. Inc. sed. i New Caled. 

 Serruria Salisb. Proteaceae (i). 50 S. Afr. 

 Sersalisia R. Br. (Lucuma p.p.). Sapotaceae (i). 6 frop. Afr. 

 Sertifera Lindl. Orchidaceae (n. 7). 2 Ecuador, Peru. 

 Service berry, Amelanchier. 



Sesame, Sesamum indicum L. ; -grass (Am.), Tripsarum. 



Sesamothamnus Welw. Pedaliaceae. 5 trop. Afr. 

 Sesamum L. Pedaliaceae. 15 trop. Afr., As. S. indicum L. largely 

 cult, in India, &c. for the oil from seeds (gingili, sesame, &c.). 



Sesban (W.I.), Sesbania. 



Sesbania Scop. Leguminosae (in. 6). 24 trop. and subtrop. S. acu- 

 leata Poir. is a marsh plant, giving off floating roots from the base of 

 the stem, covered with spongy aerenchyma (cf. Neptunia). 



Seseli L. Umbelliferae (in. 5). 60 Eur., Afr., As., Austr.; i Brit. 



Sesleria Scop. Gramineae (10). 10 Eur., W. As. ; i Brit. 



Sesqui- (Lat. pref.), one and a half; -pedalls, i| feet. 



Sessea Ruiz et Pav. Solanaceae (4). 5 Andes. 



Sessile, without stalk. 



Sesuvium L. Aizoaceae (n). 5 trop. and subtrop. Halophytes. 



Seta, a bristle. 



Setaria Beauv. Gramineae (5). 30 trop. and warm temp. S. italica 

 Beauv. (Italian millet) is cult, as a cereal in As. 



Setariopsis Scribnerex Millsp. (Setaria p.p.'). Gramineae (5). 2 Mexico. 



Setcnellanthus T. S. Brandegee. Capparidaceae (inc. sed.). i Mex. 



Setcreasea is.. Schum. et Sydow (Treleasea Rose). Commel. 4 N. Am. 



Sethia H. B. et K. = Erythroxylum P. Br. p.p. (Erythr.). 



Setilobus Baill. Bignoniaceae (i). i Brazil. 



Setiscapella Barnhart (Utricularia p.p .). Lentib. 12 trop. 



Setouratea Van Tiegh. (Gomphia p.p.). Ochnaceae. 8 Brazil. 



Seville orange, Citrus Aurantiuni L., var. Bigaradia or amara. 



Seven-year vine (W.I.), Ipomoea tuberosa L. 



Sewerzowia Regel et Schmalh. (Astragalus p.p. BH.}. Leguminosae 

 (in. 6). i Turkestan. 



Sex distribution ; sta. and cpls. in one 5 fl., t/ionoclinoiis, in separate 3 and 

 ? fls., diclinous; i and ? fls. on same pi., monoecious, on separate pi., 



