SEL 



[ 731 ] 



SEM 



under a bell-glass, but raised at night to preven 



damping. Sandy loam and vegetable moulc 



The protection of a greenhouse; but many o 



them are worth a place in the flower-garden 5 



summer. 



S. angustifo'lia (narrow-leaved). August. 1819 



bructeafta (bracted). l. Purple. June. 1812 



cant'scens (hoary). 1. Pale purple. Sep 



tember. 1812. 



corymbo'sa (corymbed). 2. White. July. 1699 



dentu'ta (toothed). 1$. White. July. 1823 



diffu'sa (spreading). l. Purple. July. 1807 



di'stans (distant-lowered). 2. White.April. 1845 



fascicula'ta (bundle-lowered). l. Blue 



July. 1774. 

 frutico'&a (shrubby). Yellow. June. 1822. 



Gifllii (Gill's). 1. Pale rose. March. 1829 



heterophy'tta (various-leaved). 1. Purple. July 



1823. 



hi'spida (bristly). Yellow. June. 1823. 



micra'ntha (small-flowered). Yellow. May. 1820 



minuti'ssima (smallest). Yellow. June. 1816 



ovu'tu (esg-headed). 1. Dark purple. 1774 



polygaloi'des (milkwort-like). |. Purple 



August. 1807. 



polysta'ckya (many-spiked). White. June. 1823 



rumulo'sa (small-branchy). l. White. 1824 



rapunculoi'des (rampion-like). 2. Violet. 1824 



rotundifu'lia (round-leaved). 1. Purple. June 



1816. 



spica'ta (spiked). |. Purple. August. 1824, 



spi'nea (spiny). 3. Purple. 1824. 



spu'ria( spurious). 1. Violet. August. 1779, 

 SELANDEIA JETHIOPS. Pear Saw-Fly! 



The upper surface of Pear-tree leaves 

 during the months of July, August, and 

 September, are liable to be destroyed 

 by what is very characteristically named 

 the slimy grub. These grubs are nearly 

 half an inch long, cylindrical, but 

 thicker towards the head than at the 

 other extremity. The whole body, ex- 

 cept at the time of skin casting, is 

 covered with a sticky, greenish black 

 matter, and from this they have been 

 named. Whilst feeding, the fore part of 

 the body is so swollen that the vermin 

 looks somewhat like a small tadpole. If 

 the slimy matter is removed from the 

 body, this is found to be a grub or cater- 

 pillar with twenty feet, and of a pitchy 



brown colour. At the last-but-one cast- 

 ing of its skin the sliminess no longer 



appears, and the grubs become of a 

 clayey colour. They finally form a brown 

 cocoon about October, and remain in the 

 pupa state until the following June or 

 July, when the perfect insect comes forth 

 in the form depicted in the annexed cut, 

 but of the size shown by the cross lines 

 above it. It is known as the Selandria 

 ^Ethiops. Linnaeus called it the Cherry 

 Saw-Fly (Tenthredo cerasi), from the 

 mistaken opinion that it attacked the 

 leaves of that tree only, whereas its 

 grubs are more frequently found on the 

 leaves of the Pear. This fly is shining 

 black, and the tips of the legs yellowish. 

 The female lays her eggs on the upper 

 surface of the leaves. The slime on the 

 grub is of a peculiar nature, not being 

 dried by exposure to the hottest sun- 

 shine. 



SELF. A flower with petals of only 

 one colour. 



SELF-HEAL. Prune'lla. 



SELLIGUE'A. (Probably from the Ja- 

 vanese name. Nat. ord., Ferns [Polypo- 

 diacess] . lAnn.^-Oryptogamia l-Filices.) 



Stove, yellow-spored Ferns. See FERNS. 



flane'scens (yellowish). Mav. E. Ind. 



Hamilto'ni ( Hamilton's). May. Nepaul. 



heterocu'rpa (various-fruited). June. Java. 



a'-rophy^ta (large-leaved). May. Java. 



pothifo'lia (pothos-leaved). May. Nepaul. 



SEMECA'KPUS. Marking Nut-tree. (From ' 

 lemeion, a mark, and karpos, fruit; the 

 )lack juice used for marking clothes. 



. ord., Anaeards [Anacardiaceae]. 



n., 23-Polygamia 2-Dicecia. Allied to 

 Anacardium.) 



Stove, gfeenish-yellow-flowered, evergreen 

 rees. Cuttings of ripe shoots in sand, under 

 i glass, in heat, in March or April ; peat, loam, 

 eaf-mould. arid sand. Winter temp., M to 60 ; 

 urnmer, 60 to 90. 

 f. anaca'rdium (anacardium). 20. E. Ind. 1820. 



cuneifo'tium (wedge-leaved). 20. E. Ind. 1824. 



SEMEIA'NDEA. (From semeia^a, banner, 

 and atier, an anther; referring to the 



>etal-like appendage to each stamen. 



". ord., Onayrads [Onagraceae]. Linn., 

 2-Diandria 1-Monogynia.) 



A greenhouse shrub, allied to Fuchsia, like 

 which it may be cultivated. 



S. grwidiflo'ra (large-flowered). 5. Scarlet. 

 March, and throughout the summer. 1853. 



SEMPEEVI'VUM. Houseleek. (From 

 empervivo, to live for ever; tenacity of 

 fe. Nat. ord., Houseleeks [Crassulacese]. 

 arm., \\-Dodecandria 7-Dodecagynia.) 



Hardy and frame kinds, by division, and by 

 uttings, and most of them deliarht in dry, sand? 

 oil, kept moiat only when growing. Greenhouse 



