O CO TEA 
485 
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 OIDEA E (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. 7?iultiflora 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. 17 7)* 
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 g , usually regular firs. 
K 5, free or united at base, imbricate; C 5, rarely 10, 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., O. Lagopus 
Sw. the Bolsa 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 ( 1 ). 200 sp. trop. and subtrop. O. bullata 
E. Mey. (S. Afr.) yields a useful timber. 
