SYNOPSIS OF THE NATURAL ORDERS. 
XVll 
PoTAMOGETONEA?. Perianth 4-partcd. 
327. CoLCHicACEAO. Perianth 6 — 7-partcd. Caps, opening at 
the inner edge. 
B. Ovary 1, inferior. 
.306. Orchidea;. Stam. and style united in a central column. 
305. IIydrocharide.®. Stam. free. Sep. 3. Pet. 3. 
316. Iride.®. Stam. free, 3. iVnth. bursting outwards. Peri- 
anth coloured. 
318. Amaryllide.®. Stam. free, 6. Anth. bursting inw’ards. 
Perianth coloured. Fr. a 3-valved capsule. 
C. Ovary 1, superior. 
I. Perianth like a corolla of 6 petals. 
321. Liliace.®. Fr. ch-y, bursting with 3 valves. 
319. Asparage.®. Fr. succulent, not bursting. 
II. Perianth more or less glumaceous, like a calyx, or partly 
coloured. 
328. JuNCACE.®. Perianth 6-parted. Stam. 6. FI. herma- 
phrodite. 
328. Eriocaulace.®. Perianth 4 — 5-parted. Stam. 2 — 6. 
FI. monoecious. 
338. Aroide.®. FI. mostly unisexual, on a spadix or in dense 
spikes ; or monoecious in a membranous spath. 
341. Potamogetoneae (Zostera). Perianth 0. FI. in 2 rows 
upon one side of a spadix. 
Subdivision II. Glumace^. Floral envelopes imbricated. 
346. Cyperace.®. Leaves with entire sheaths. Anth. entire 
at the end. 
370. Gramine.®. Leaves with split sheaths. Anth. notched at 
both ends. 
II. CRYPTOGAME^ or FLOWERLESS PLANTS. 
Class III. CRYPTOGAMEA: DUCTULOSiE. 
403. Equisetace.®. Leafless branched plants with a striated 
fistular stem, with sheaths at the articulations. 
406. Filices. Leafy plants. Thecae from the veins on the 
underside or at the end of the leaves. 
417. Lycopodiace^. Leafy plants. Thecae axillary, sessile. 
