AN ENCYCLOPEDIA OF HORTICULTURE. 



523 



Org-yia antiqna, or Vapourer Moth. continued. 

 The body is dark brown ; the wings are rusty -brown, 

 with markings of deeper and paler tints, and at the rear 

 angle of each fore wing is a conspicuous white spot. 



FIG. 774. ORGYIA ANTIQUA (Male). 



The female has the wings reduced to tiny scale-like 

 organs on each side of the heavy, clumsy body, which 

 is covered with woolly, yellowish-grey pubescence. The 



FIG. 775. LARVA OF ORGYIA ANTIQUA. 



larva is shown of the natural size in Fig. 775. It is 

 covered with yellowish hairs. On the back of the 

 fourth to seventh segments are long tufts of yellow 

 or brown hairs ; and on the back of the last segment, 

 and on each side of the head, is a long black tuft of 

 clubbed hairs. The larva may reach 2in. in length. 

 When full fed, it spins, in crevices or among leaves, a 

 slight greyish-brown cocoon of silk, largely mixed with its 

 own hairs, and in this changes into a hairy pupa. The 

 female emerges in autumn, and lays her eggs on her 

 cocoon, where they pass the winter, the larvae emerging 

 in spring. 



Remedy. The best remedy is hand-picking the insects 

 in all stages of development; the larvae especially are 

 conspicuous. 



ORIGANUM (the ancient Greek name, used by 

 Hippocrates). Marjoram. Including Majorana. OED. 

 Labiatce. A genus comprising about twenty-five species 

 of mostly hardy sub-shrubs or herbaceous perennials, for 

 the most part natives of the Mediterranean region, one 

 being indigenous to the Canary Islands, and two or three 

 broadly dispersed over Europe and extra-tropical Asia. 

 Corolla tube included or exserted ; limb bilabiate ; whorls 

 two, rarely six to ten, flowered, crowded in globose, oblong 



Origanum continued. 



or cylindrical spikelets, which are solitary or aggregate 

 at the tips of the branches. Leaves small, entire or 

 slightly toothed; floral ones all reduced to bracts. Few 

 of the species have any ornamental value, but the 

 undermentioned are worth growing. For cultivation of 

 0. Majorana, see Marjoram. All the other species 

 here mentioned are easily raised from seeds, or from 

 cuttings of the young, growing, barren shoots; or by 

 division of the roots. They like a rather dry, warm, 

 well-drained border, and succeed in almost any soil. 



O. Dictamnns (Dittany). Dittany of Crete, fl. pink, in drooping 

 heads. Summer. I. broad-ovate, obtuse, quite entire, rounded 

 at the base, thick, clothed with dense wool on both surfaces. 

 Branches ascending, h. 1ft. Crete, 1551. A very pretty, but 

 rather tender little sub-shrub. (B. M. 298.) 



O. Majorana, Garden, Knotted, or Sweet Marjoram, fl. purplish 

 or white ; spikelets oblong, sessile, glomerate on the branchlets. 

 June. 1. petiolate, oblong-ovate, obtuse, quite entire, tomentose 

 on both surfaces. Branches nearly glabrous, racemosely panicled. 

 h. 1ft. to 2ft. North Africa, 1573. SYNS. 0. majoranoides and 

 Majorana hortennis. See also Marjoram. 



O. majoranoides (Marjoram-like). A synonym of 0. Majorana. 



O. Mara (mastic), of Suns. A synonym of 0. microphyllum. 



O. microphyllnm (small -leaved), fl. pink; spikelets few, 

 globose, disposed in small, loose corymbs at the tips of the 

 branches. June. L small, remote, petiolate, broadly ovate, 

 obtuse, round at base. Branches purplish, smooth, filiform. 

 h. 1ft Crete, Ac. Sub-shrub. (B. M. 2605, and S. F. G. 573, 

 under name of O. Maru.) 



O. Oxtites (Onites). Pot Marjoram, fl. whitish ; spikelets small, 

 ovoid, numerous, densely corymbose. Summer. I. sessile, 

 ovate, serrated a little, rather villous or tomentose. Steins erect, 

 nearly simple, hairy, h. 1ft. Mediterranean region, 1759. Sub- 

 shrub. (S. F. G. 572.) 



O. sipyleum (Mount Sipylos). fl. pink ; spikelets oblong, soli- 

 tary, or by threes, drooping. Summer. I. on short pedicels, 

 quite entire ; lower ones roundish, hispid or woolly ; upper ones 

 ovate, glaucous. Stem decumbent, paniculately branched at top. 

 h. 1ft. to lift. Levant, 1699. A very pretty procumbent sub- 

 shrub. (S. F. G. 570.) 



O. Tournefortii (Tournefort's). Dittany of Amorgos. fl. pink ; 

 spikes more dense th'aii in 0. Dictamnus. August. 1. sessi'.e, 

 orbiculate, sub-cordate at base. h. 1ft. Amorgos, 1788. Sub- 

 shrub. (A. B. E. 537 ; S. F. G. 569.) 



O. vnlgare (common). Coamon or Wild Marjoram, fl. purple; 

 spikelets oblong or cylindrical, glomerate, corymbosely panicled. 

 Summer. I. petiolate, ovate, obtuse, serrated a little, rounded at 

 the base. Stem erect, villous, herbaceous, h. 1ft. to 2ft. Europe, 

 &c. (Britain). (B. M. PL 204.) 



OHJTHALIA. Included under Agalmyla. 

 ORJTHYIA. Included under Tulipa (which see). 



ORMOCAKiPUM (from ormos, a chain, and karpos, 

 a fruit ; referring to the narrow, chain-like pods). SYNS. 

 Diphaca and Rathkea. OED. Leguminosce. A small genus 

 (about half-a-dozen species) of tall, often glutinous, stove 

 or greenhouse shrubs, of which one is broadly dispersed 

 between the tropics in Asia and Africa, two or three are 

 indigenous to tropical Africa, and two are Mexican. 

 Flowers yellow, white, or purple-striped, in short, axillary 

 racemes ; standard orbicular, unguiculate. Pods linear, 

 compressed. Leaves sometimes impari-pinnate, with small 

 exstipellate leaflets, sometimes one-foliolate, with a large, 

 acute leaflet; stipules striped. The undermentioned, the 

 only species in cultivation, is a greenhouse evergreen, of 

 strong habit. Young specimens only are adapted to pot 

 culture ; the older ones should be placed out in the 

 borders in summer. A compost of peat and loam is the 

 best soil for this plant. Propagation may be effected, in 

 April, by cuttings of half-ripened shoots, inserted in the 

 compost above mentioned. 



O. coronilloides (Coronilla-like). fl. pale yellow; peduncles 

 many-flowered, axillary. May. I. impari-pinnate ; leaflets 

 ovate, glabrous, small, sub-sessile, opposite or alternate. Stem 

 arboreous ; branches spreading. Tropical Africa, 



ORMOSIA (from hormos, a necklace ; referring to 

 the seeds of 0. coccinea, which are scarlet, with a dark 

 spot, and are strung for necklaces). Necklace-tree. In- 

 cluding Macrotropis. OBD. Leguminosce. A genus 

 comprising about eighteen species of stove, evergreen 



