811 



C^c CrcaStirn cf SSfltann. 



[OMPH 



which has pinnate sterile fronds, the pinna; 

 traversed by parallel simple or forked 

 veins. connected at the margin by a straight 

 marginal vein. The fertile contracted 

 fronds are pinnato-pinnatiffd or bipinnate, 

 and covered on both surfaces with spore- 

 cases. "With this are sometimes associated 

 a few other species having the marginal 

 vein arcuate, as in the South American O. 

 longifolia ; or having the marginal vein zig- 

 zag with an excurrent veinlet from each 

 exterior angle, as in the St. Helena 0. sub- 

 diaphana. [T. M.J 



OLIBANTM, AFRICAN. The fragrant 

 gum-resin produced by BoswelHa papyri- 

 fera. — , INDIAN'. The gum-resin of Bos- 

 u-ellia thurifera, also called B. serrata. 



OLIETTE. (Fr.) Papaver somniferum. 



OLIGOS. In Greek compounds=a small 

 number. It is generally used in contrast 

 with many (jioly), when no specific number 

 is employed, as in the definition of things 

 the number of w T hich is small, but variable ; 

 thus oligocarpous is applied to sori in which 

 the spore-cases are few in number. 



OLIO DI MARMOTTA. A Piedmontese 

 name for the oil obtained from the buds of 

 Rhododendron ferrugineum. 



OLIVACEUS, OLIVE-GREEN. A mix- 

 ture of green and brown. 



OLIVE. Olea europcea. —, BARBA- 

 DOS WILD. Bontia daphnoides. — , 

 BLACK. Bucida Buceras. — , CALIFOR- 

 NIAN. Oreodaphne californica. — , SPU- 

 RIOUS, of Victoria. Notelcea ligustrina. 

 — , WILD. Elceagnus angustifolius ; also 

 Rhus Cotinus and Daphne Thymeleea. — 



— of India, Olea dioica; also Putranjiva 

 Roxburghii. — , — of the West Indies. 

 Ximen/a americana ; also Bucida Buceras, 

 and Bucida capitata. 



OLIVE-BARK TREE. Bucida Buceras. 

 OLIVETIER. (Fr.) Elceodendron. 

 OLIVE-WOOD. Elceodendron: also the 

 yellowish fancy wood of the Olive-tree. 



OLIVEWORTS. Lindley's name for the 

 Oleacece. 



OLIVIER. (Fr.) Olea; also applied to 

 the West Indian wood of Bucida Buceras. 



— BATARD. Bontia daphnoides. -DE 

 BOHEME. Elceagnus angustifolius. — DES 

 BARBADES. Bontia daphnoides. — ODO- 

 RANT. Osmanthus. 



OLLUCO. (Fr.) MellocatiCberosa. 



OLMEDIA. A genus of Peruvian trees 

 of the family Artocarpaceai. The flowers 

 are dioecious ; the males attached to a glo- 

 bose receptacle, surrounded by an invo- 

 lucre of numerous bracts, and having a 

 tubular perianth with two or four erect 

 segments, opposite to which the stamens 

 are placed ; the females solitary, surround- 

 ed by numerous overlapping bracts, tubu- 

 lar, contracted at the throat, with a slightly 

 four-toothed limb, an ovate one-celled 

 ovary, with solitary pendulous ovules, and 

 a style dividing into two long thread-like 



branches. The fruit is enclosed within the 

 thickened fleshy perianth, protected by the 

 involucre. pi. T.M.] 



OMALANTHTJS. A small genus of Eu- 

 phorbiacea?, confined to the tropics of Asia 

 and New Holland. The plants have long- 

 stalked entire leaves, and terminal spikes 

 of inconspicuous unisexual flowers, the 

 males in clusters of three or four on the 

 upper part of the spike, and the females 

 solitary at the base. Both have a calyx of 

 two flat semicircular leaves notched and 

 glandular at the base ; the males contain- 

 ing six to ten stamens with short flat fila- 

 ments partly adhering to each other, and 

 the females a somewhat cylindrical two- 

 celled ovary, terminated by a thick two- 

 pronged style and two stigmas. The fruits 

 are two-celled and two-valved, each cell 

 containing a solitary seed. [A. S.] 



! OMALOTHECA. A generic name adopt- 

 ed by some authors for the Gnaphalium 

 supinum, which differs from other species 

 in the outer row of female florets being 



i in a single series, and in the flattened 

 achenes. It is a small tufted perennial 

 herb found in Alpine places in Europe and 

 Western Asia, and not uncommon on 

 some of our highland mountains. The 



[ narrow leaves are clothed with white 



i down, and the small flower-heads at the 

 end of the stalk have brown involucral 

 scales. Sometimes very dwarf varieties 



i about half an inch high are found, and in 

 these the flower-heads are sessile in the 

 midst of the leaves. [A. A. B.] 



j OMANDER-WOOD. A variety of Cala- 



j 7iiander wood obtained in Ceylon from 

 Biospyros Ebenaster. 



OMBROPHYTUM. A genus of Balano- 

 phoracece, consisting of fleshy herbaceous 

 plants.with shield-likerootstocks whichare 

 attached to the roots of trees. The flower- 

 stalk is surrounded at the base by a lea- 

 thery or woody sheath, the flowers them- 

 selves being crowded along the sides of 

 the little stalks supporting the peltate 

 bracts, unisexual and monoecious, the 

 females having two styles. These plants, 

 according to Poppig, are boiled and eaten 

 like fungi ; they spring up suddenly in 

 Peru after rain, whence the name from the 

 Greek ombros, a shower, and phuton, a 

 plant. [M. T. M.J 



OMIME-ROOT. Plectranthits ternatus. 



OMLAH. A Bengal name for Emblica 

 officinalis. 



OMCEA. Ceratochilus. 



OMPHALARIA. A small genus of gela- 

 tinous lichens, remarkable for its conidia 

 being generated in the same manner as 

 Haimatococcus is multiplied. [M. J. BJ 



OMPHALEA. A genus of tropical Eu- 

 phorbiacea?, consisting of trees or tall 

 woody climbers, remarkable for the struc- 

 ture of the male flowers, in which the sta- 

 j minal body is composed of a mushroom- 

 ' shaped receptacle or disk, round the edge 



