OCOTEA 
499 
Nuphar it is superior, in Nymphaea semi-inferior, in Victoria inferior. 
The perianth too shows much variety, from the simple Cabomba-type 
to Nuphar, &c. The ovules are usually anatropous. The seed has 
both endosperm and perisperm (exc. Nelumbium), and is often aril- 
late. For full details of the floral structure see the chief genera, and 
Eichler’s Bliithendiag. 
Classification and genera (after Caspary) : 
I. NELOMBONOIDEAE (seed exalbuminous ; cpls. free in 
obconical receptacle) : Nelumbium (only genus). 
II. CABOMBOIDEAE (endosperm and perisperm; cpls. free): 
Cabomba, Brasenia. 
III. NYMPH A E OIDEAE (do., but cpls. united): Victoria, 
Euryale, Nymphaea, Nuphar, Barclaya. 
[Placed in Ranales by Benth. -Hooker, in Polycarpicae by Warming.] 
Nyssa Gronov. ex Linn. Cornaceae. 6 sp. N. Am., Himal., Malaya. 
N, niultiflora Wangenb. and others in N. Am. (Tupelo, Pepperidge, 
Gum-tree) yield timber and edible fruit. 
Oberonia Lindl. Orchidaceae (8). 50 sp. trop., exc. Am. 
Obione Gaertn. = Atriplex Linn. 
Obolaria Linn. Gentianaceae (1, 2). 1 sp. N. Am. Saprophyte (cf. 
Bartonia) of a purplish green colour with scaly leaves (p. 177)- 
Ochna Linn. Ochnaceae. 30 sp. trop. As., Afr., Cape Col. The 
calyx is coloured. Cpls. 3 — 15, free below, but with a common style. 
After fertilisation the style falls off and each cpl. gives rise to a drupe, 
while at the same time the receptacle becomes fleshy underneath 
them. The leaf is a good one for showing veining. 
Ochnaceae. Dicotyledons (Archichl. Parietales). 17 gen. with 210 sp., 
trop. Most are trees or shrubs with alt. usually simple stip. leaves, and 
panicles, racemes or cymes (Sauvagesia, &c.) of £ , usually regular firs. 
K 5, free or united at base, imbricate; C 5, rarely io, contorted; A 
5, 10, or 00 , hypogynous or on an elongated axis ; G (2 — 5), rarely (10 — 
15), often free below with common style (cf. Apocynaceae). Ovules 
1 — 2 — 00 in each cpl., erect or rarely pendulous, always with ventral 
raphe. The axis swells and becomes fleshy under the fruit, which is 
usually a cluster of drupes, but sometimes a berry or capsule. Endo- 
sperm or not. Chief genera: Ochna, Gomphia, Sauvagesia. Benth. - 
Hooker place Ochnaceae in Geraniales, but unite Sauvagesia and its 
allies to Violaceae. Warming places O. in Terebinthinae, also placing 
the Sauvagesieae in Violaceae. 
Ochroma Sw. Bombacaceae. 1 sp. trop. Am., W. Ind., <9. Lagopus 
Sw. the Balsa or corkwood. The wood is very light and is used for 
floats, canoes, &c. The seeds are embedded in hairs. 
Ocimum Linn. Labiatae (vn). 45 sp. trop. and warm temp. O. 
Basilicum L. is the basil. 
Ocotea Aubl. Lauraceae (r). 200 sp. trop. and subtrop. O. bullata 
E. Mey. (S. Afr.) yields a useful timber. 
32—2 
