XXxii SYNOPSIS OF THE NATURAL ORDERS. 
1 Leaves straight- or parallel-veined (belonging generally 
to plants having 3-parted floral whorls or a 6-parted 
perianth)* 2 
Leaves net-veined (belonging generally to plants having 
5- or 4-parted floral whorls) t 3 
2 Seeds in a seed-vessel 62 
Seeds apparently naked on an axillary scale or in a 
fleshy cup and solitary. Male fl. in catkins. L. 
linear or subulate Ixxix. ConifercB. 
3 Fl. with a calyx and corolla » 4 
Fl. with a perianth (calyx undistinguishable from 
corolla) or none 50 
4 Corolla polypetalous, inferior 5 
Corolla polypetalous, superior 29 
Corolla gaiuopetalous (petals cohering), superior 34 
Corolla gamopetalous, inferior 39 
5 Ovaries many, distinct or' united, each bearing a style ; 
or solitaiy with one lateral placenta 6 
Ovary solitary ; placentas 2 or more, parietal or on the 
dissepiments, not forming a central axis 13 
Ovary solitary ; placentas central 17 
6 Corolla regular 7 
Corolla irregular 10 
7 Sepals distinct. Stamens hypogynous 8 
Sepals more or less combined below ■ 9 
8 Stamens few. Anth. adnata ; connective extending 
beyond them Ixxx. Trilliacexr,. 
Stamens indeflnite, usually many (when few, alternate 
with the petals). Anth. at top of filament, opening 
by two longitudmal clefts i. Ranunculacece. 
Stamens as many as and opposite to the petals. Anth. 
at top of filament ii. Berberidacece. 
- Thn leaves of these plants (Monocotyledones) are nearly always parallel, 
veined. A few exceptions are Dioscoreacrce {Tamus), Trilliacea: (Paris), and 
Aracea: (Arum), which will be found by following either series of characters. 
Care must bi^ taken not to confound leaves having paraliei veins u-hich are con- 
nected b;i simple transverse veins with net-veined leaves. The broad' leaves of 
Ahswa, Fotamogeton, aud Hydrucharis are examples of the former, rinuatitid 
leaves with linear lobes as ni Aneinviu Pulsatilla, may be mistaken tor parallel- 
veined leave.s ; also the submersed leaves of Kanunadi. 
t The narrow leaves of some of these plants (Dlcolyledones) are apparently 
parallel-vemed. They are chietiy aquatics : 
Leaves divided in a pinnatifid way. 
XXX. Haloragacea: (Myriophyllum). 
Leaves repeatedly forked Ixxiii. Ceratoph ylUtcea. 
Leaves simple xxx. llaloragacece (Uippuris). 
