GLOSSARY OF TERMS. Ixi 
PAR. PAR. PAR. 
Trichotomous . . 384 | Umbilicate . ° . 173 | Vegetable Chemistry . 8 
Tria . ‘ . 43 | Umbonate . * . 173 | Vegetable Homology 
Trifoliolate . “ . 41 | Uncinate=hooked. or Metamorphosis . 88 
Trigonous . . . 54 | Undershrubs ° of he 
Tripinnate . ° - 48 | Undulate . ‘ . 09 | Vegetable Physiology 8,207 
Triplinerved ° . 40 | Unequally pinnate . 43 | Veins, veinlets, venation 40 
Triquetrous ° . 4 | Unguiculate ; . 107 | Vernation . ; a OL, 
Tristichous . ° . o2 | Unguis (claw) . . 107 | Versatile anther . . 114 
Truncate . ° . 47 | Uni- (Lin composition) 44 Verticil, verticillate . 32 
Trunk . . : . 12 | Unilateral (one-sided) Vessels. : 2 . 188 
Tube . ‘ . 101, 104 racemes . 6 . 74 | Virgate=twiggy. . 28 
Tuber, tuberous 20, 25, 204 | Unilocular . : 5 126 | Viseid; viscous. es WW 
Tuberculate . a » er | Unisexual’: . : . 86 | Vitta, vittee ; . 175 
Tubular - a . 104 | Unsymmetrical . . 94 | Viviparous . ° geet 
Tufted . - ei 28-| Upper « ‘ » 91 | Voluble : 5 s/c 2e 
Tunicated bulb . Reade oie Oxceolater -. . . 104 
Turbinate=top-shaped 54 | Utricle. ° 5 . 158 | Wart, warted . . 173 
Twiner - : ees) Wavy . - a3 pines 
Twisted : 2 . 102 | Valvate ° ° 2 102 | Whorl, whorled . «. Be 
Type, typical ° ~ 181 |. Valves. - ° . 158 | Wing, winged . 37, 155 
Variety ‘ J . 178 Wood . ; a Pra bo 
Umbel, umbellate, um- Vascular tissue . . 188 | Woody tissue . . 188 
bellule . e a0, 74 Vegetable Anatomy 8, 186 Wool, woolly « akie 
Ili. ARRANGEMENT OF THE TEXT, AND ABBREVIATIONS 
USED IN THE PRESENT WORK. 
In the following pages the name of each Family or Order (for the two 
words may be indiscriminately used) is given in Latin and in English. 
The English name is always in two words, exclusive of the particle. 
Where the first word is not the name of a genus also, it may be used 
alone to designate the family by putting it in the plural, as Crucifers 
for the Crucifer family, Waterlilies for the Waterlily family. Where, how- 
ever, it is also the name of a genus, and it is wished to designate the 
family by a single word, in order to avoid confusion, either the Latin 
name must be taken, or it must be Anglicised by some of the modes 
which have been proposed, such as substituting the terminations zds 
for idee, and anths or ads for acew, as: Orchids for Orchidaceew, Ranun- 
culanths or Ranunculads for Ranunculacee. 
After the name of the family, the first paragraph, in large type, is the 
character of the family ; the second, in ordinary type, contains remarks 
on its geographical distribution and aflinities. 
This is followed, in small type, by the analytical key of the British 
genera belonging to the Order, as above explained, (p. lii., par. 245); 
and short memoranda are occasionally subjoined on commonly culti- 
vated plants belonging to exotic genera. 
Each genus commences with the name, in Latin on the left, in English 
on the right. Where there is no English name suitable for the genus, 
the Latin one is repeated, as it must in that case be used as English. 
