62 



SEbo'tinds — Late ; when a plant flowers 

 later in the year than others to which 

 it is related. 



See'eated, Sbrea'tus— When the ttiargin 

 is cut into teeth like those of a saw. 



SEEEJiFO'LIUB.SEBEATW'O'LIUS— Having 



serrated leaves. Seeeula'tus — Syno- 

 nym for "Denticulatus." (See leaves 

 of Fhotinia serrulata.) 



Sbe'tulum (Diminutive for Sertiim, a gaj-- 

 land) — Synonym for "Umbella," when 

 simple. 



Ses'qui — This term, prefixed to the Latin 

 name of a measure, shows that such 

 measure exceeds its due length by one- 

 half ; thus Sesquipeda'hs means a foot 

 and a-half. 



Sbssi'le, Ses'.'^ilis (As it %vere sitting) — 

 Whon an organ is attached to its sup- 

 port without the intervention of some 

 intermediate part ; as when a leaf is 

 without petiole (sessilifolius), a flower 

 without a pedicle (sessiliflorus). Thus 

 the flowers of a ppiUe are sessile, while 

 those of the raceme are pedicellate. 



Se'ta (A bristle)— Any stiff hair. The 

 stalk supporting the theca of Mosses. 

 The arista of grasses, when it is not 

 below the apex, but forms a termination 

 to any of the floral bracts. Seta€eo- 

 sekeatus — Where the serratures taper 

 off to bristle-like points. Setaoeoo.s, 

 Setaceus — Possessing the characters 

 ascribed to a seta. Sbtifoemis— 

 Shaped like a seta, or bristle-like. 

 Setigeeus — Furnished with one or 

 more setre. 



Sex, Sex'us (A sex)— When stamens or 

 pistils alone, or when both these organs 

 are formed in flowering plants, the 

 flowers are termed male, female, or 

 hermaphrodite accordingly. Sextd'- 

 PLEX — Where a part is six times re- 

 peated. 



Sexan'gulae, Sexangula'eis— With six 

 angles, or decided projections from the 

 surface. Sexfa'rius — Presenting six 

 rows, extendfng longitudinally round 

 an axis. 



Sial'.agogue — Having the power of exciting 

 saliva, as Ginger, Zingehtr oficinalis. 



Sio'cus (Dry) — As Hoe'tus-sig'ous, a dry 

 garden; synonym for "Herbarium." 



Sigilla'tus— When a rhizome is marked 

 by scars left by the fall of branches 

 successively developed upon it. 



Sig'moid, Sigmoi'dbus — Curved in two 

 directions like the letter S. 



Si'licle, Silic'ula (A little pod) — Formed 

 like a siliqua, but where the length 

 never exceeds four times the breadth. 

 (See the cruciferous plant called 

 "Shepherd's Purse," Capsetla Bursa- 

 pastoris, ) 



Hil'igua and SiLio'nLA are terms applied 

 to the fruits of Cruciferae. Dr. Lind- 

 ley's definition : — Siligua — One or two- 

 celled, many seeded, superior, linear, 

 dehiscent by two valves separating 

 from the replum; seeds attached to 

 two placentae adhering to the replum, 

 and opposite to the lobes of the stigma. 

 The dissepiment of this fruit Is con- 

 sidered a spurious one formed by the 



projecting placentae, which sometimes 

 do not meet in the middle ; in which 

 case the dissepiment or phragma has a 

 slit in its centre, and is said to be 

 fenestrate. Silicul^ — This differs from 

 the latter in nothing but its figure, and 

 in containing fewer seeds. It is never 

 more than four times as long as broad, 

 and often much shorter. (See the seed- 

 pods of Turnip or Cabbage.) 

 SiMPLlois'siMUS — Without the slightest 

 tendency to subdivision or ramifica- 

 tions. 

 Sinen'sis — Synonym for " Chinensis " ; 

 belonging to China, as Wistaria 

 chinensis. 

 SiNLS'TEOESE, Sinistror'sdm (Towards 

 the left hand) — Where the coils of a 

 spiral would appear, to a person in the 

 axis, to rise from right to left. 

 SiN'"UATE, Sinca'ted, Sinua'tus (Crooked) — 

 A margin rendered uneven by alternate 

 rounded and rather large lobes and 

 sinuses. Sinoato-dentatos — Between 

 sinuate and dentate. Sincola'tus — 

 Synonym for "Kepandus." (See the 

 leaves of young plants of Stenocarpus 

 sinuatus. ) 

 Si'nus — A bay. The re-entering angle or 

 depression between two projections or 

 prominences. 

 SiPHONl'PHYTUM — A composite plant with 



all the florets floscular. 

 Si'tus (Situation) — The peculiar mode in 

 which parts are disposed, as well as the 

 position they occupy. 

 Soils, Classieication of — 

 Alluvial Soils are such as have been 

 formed by the washings of streams. 

 They are generally loamy, and very 

 fertile. 

 Calcareous Soils are those in which lime, 

 exceeding 20 per cent., becomes the 

 distinguishing constituent. 4^alca- 

 reous soils may be either calcareous 

 clays, calcareous sands, or calcareous 

 loams, according to the proportions 

 of sand or clay which may be present 

 in them. 

 Heavy Soils — The heavy or clayey soils 

 are also known as wet and cold, 

 from their affinity for water. In 

 dry weather, however, they are liable 

 to bake, or become hard and brick- 

 like. They are diflfioult to work, 

 and, till much modified by art 

 and labour, generally unproductive. 

 These require thorough underdr.ain- 

 ing. In small gardens sand may be 

 applied to this soil with advantage. 

 Lime is valuable in improving such 

 soil ; also ashes, and coarse vegetalale 

 manures. They should also be fre- 

 quently worked. 

 Light Soils— The light or sandy and 

 gravelly soils are denominated dry 

 and warm, because they permit the 

 water to pass readily through them. 

 They are subject to drought, and 

 have the further disadvantage of 

 allowing a large proportion of the 

 manure applied to them to pass 

 through into the subsoil. They are 

 easy to work, and crops can be 



