OTHONNA 



623 



OURISIA 



OTHO'NNA. Ragwort. (From othone, linen; refer- 

 ring to the soft, downy clothing of the leaves, ^,'at. ord. 

 Composites [Composite]. Linn. ig-Syngenesia, ^-Neces- 

 saria.) 



Greenhouse, yellow-flowered plants, from South Africa, 

 except where otherwise mentioned. Seeds in a mild 

 hotbed, in spring ; annuals may be hardened off after- 

 wards ; perennials, by division of the plant ; tuberous- 

 rooted, by dividing them ; shrubs, by cuttings of half- 

 ripened shoots in sand, under a glass, in May ; sandy 

 loam, and a little fibrous peat. Winter temp., 40 to 48. 



ANNUAL. 

 O. Tage'tes (marigold-leaved). See GAMOLEPIS ANNUA. 



HERBACEOUS. 



O. crassifo'lia (thick-leaved). Yellow. 1870. A pendent 



basket plant. 



linifo'lia (flax-leaved). 2. July. 1824. 

 pinna'ta (leafleted). 3. May. 1759. 

 pinnati'fida (leaflet-like). See CINERARIA OTHON- 

 NOIDES. 



TUBEROUS-ROOTED. 



0. amplexicau'lis (stem-clasping). See O. AMPLEXIFOLIA. 

 am/fc7o'/ta(clasping-leaved). i. Yellow. S.Africa. 

 ,, bulbo'sa (bulbous). 2. May. 1774. 

 ,, ftlicau'lis (thread-stemmed). i$. April. 1791. 

 iubero'sa (tuberous). August. 1842. 



EVERGREEN SHRUBS. 

 0. abrotanifo'lia (southernwood-leaved). See EURYOPS 



ABROTANIFOLIUS. 



,, arbore'scens (tree-like). 2. July. 1723. 



Athana'sice (Athanasia-like). See EURYOPS ATHAN- 



ASUE. 



carno'sa (fleshy). J. Yellow. 1867. 

 ,, cheirifo'lia (wallflower- leaved). See OTHONNOPSIS 



CHEIRIFOLIA. 



corono/>t'/o'/ia(buckhorn-leaved). 2. August. 1731. 



cyli'ndrica (cylindrical), i. Yellow. 



denticula'ta (tooth-leaved). 2. June. 1774. 



digita'ta (finger-leaved), ij. July. 1824. 



., ftabellifo'lia (fan-leaved). See EURYOPS VIRGINEUS. 



frute'scens (shrubby). 2-3. Yellow. August, Sep- 

 tember. S. Africa. 



furca'ta (forked). Light yellow. January. Ichaboe, 

 S. Africa. 1845. 



heterophy'lla (various-leaved). 2. May. 1812. 



pectina'ta (comb- like). See EURYOPS PECTINATUS. 



perfolia'ta (leaf-stem-pierced), i. June. 1789. 



tenui'ssima (finest-leaved). See EURYOPS TENUISSI- 

 MUS. 



trine'rvia (three- nerved). 1-2. Yellow. S. Africa. 



tripline'rvia (triple-nerved). 4-5. Yellow. 1862. 



,, virgi'nea (virgin-like). See EURYOPS VIRGINEUS. 



OTHONNOTSIS. (From Othonna, and opsis, resem- 

 blance ; it resembles some of the species of Othonna. 

 Nat. ord. Composite.) 



Greenhouse subshrub, but hardy in the southern and 

 more favoured parts of the British Islands. Cuttings in 

 sand under a hand-light in summer. Loam, leaf-mould, 

 and sand ; light soil outdoors. 



0. cheirifo'lia (wallflower-leaved). if. Yellow. July. 

 Algeria. 1752. " Barbary Ragwort." 



OTTDIA. See PELARGONIUM. 



OTIORHY'NCHUS. (A genus of weevils, three of which 

 are very destructive in gardens. The Clay-coloured 

 Weevil (0. picipes) is the most common, and destroys 

 the foliage, young shoots, and flowers of wall-trees, vines, 

 and raspberries. It is clay-coloured, with darker spots 

 on the wing-cases. The Black Vine Weevil (0. sulcatus) 

 is dull black, with furrowed wing-cases. It destroys 

 vines and strawberries. The Red-legged Garden Weevil 

 (O. tenebricosus) when newly developed has the wing-cases 

 covered with small patches or spots of silky yellow hairs, 

 but these soon rub off, when it assumes a shining black or 

 reddish-black colour. It attacks the buds, young shoots, 

 and leaves of Peaches, Nectarines, Plums, Apricots, and 

 other fruit-trees. All have short stout beaks, compared 

 with many other hurtful weevils. The eggs are laid in 

 the soil, and the legless white maggots prey on the ropts 



of a great variety of garden plants. Those of O. picipes 

 destroy the roots of Maidenhair and other Ferns, 

 Echeverias, Chinese Primulas, and many other garden 

 plants. The maggots of the Red-legged Garden Weevil 

 destroy the roots of Raspberries, Strawberries, Goose- 

 berries, Currants, vegetables, &c. Their habits are 

 nocturnal, and the wing-cases being fixed they cannot 

 fly. When their presence is detected in a house, a white 

 sheet should be laid under the plants or trees infested, 

 and a visit paid at night with a dark lantern. If this is 

 suddenly flashed upon the infested plants the weevils 

 will drop on the sheet. The plants may also be smartly 

 tapped with the same object. The weevils can then be 

 quickly gathered up and destroyed. All unnecessary 

 rubbish should be cleared out of infested houses, and the 

 cracks and crevices of walls cemented to destroy hiding- 

 places. Traps, consisting of pieces of board, slates, and 

 tiles can be laid about the house and examined in the 

 morning to destroy the weevils found hiding there. 



OTOCHTLUS. (From ous, otos, an ear, and cheilos, a 

 lip ; the lip having ear-like lobes. Nat. ord. Orchidaceae.) 

 Intermediate-house ephytical Orchids. Division when 

 growth commences Peat fibre, sphagnum, potsherds, 

 and some lumps of charcoal. 

 0. fra' grans (fragrant). See O. PORRECTUS. 

 fu'scus (dusky). f-J. Dusky-brown ; lip deep yellow, 



rose. August. Himalaya. 1840. 

 porre'ctus (porrect). J. White. June. Himalaya. 

 1836. 



OTO'PTERA. (From ous, an ear, and pieron, a wing ; 

 referring to an ear-like process on the wing-petals. Nat. 

 ord. Leguminous Plants [Leguminosae], Linn. if-Dia- 

 delphia, 4-Decandria. See VIGNA.) 

 0. Burche'llii (BurchelTs). See VIGNA BURCHELLI. 



OTOSTE'GIA. (From ous, otos, an ear, and stegos, a 

 covering. Nat. ord. Labiate.) 



Half-hardy or greenhouse evergreen. Seeds, divisions ; 

 cuttings in sand under a hand-light in summer. 

 0. scario'sa (dry). J. Purple. August. Arabia ; 

 Abyssinia. 1752. 



OTOSTE'MMA LACUNO'SA. See HOYA LACUNOSA. 



OTTE'LIA. (The native name in Malabar. Nat. ord. 

 HydrocharidaceaE.) 



Stove aquatic herbs. Seeds, offsets. Fibrous loam, 

 peat, and sand. 

 0. alismoi'des (Alisma-like). White. Trop. Asia and 



Australia. 1806. 



i'ndica. (Indian). See O. OVALIFOLIA. 

 ovalifo'lia (oval-leaved). J. White, pale yellow. 

 Summer. Australia. 1883. 



OTTER MOTH. (Hepialus humuli.) This insect is 

 also known as the Ghost Moth, from the colour of the 

 male, and Ghost Swift, on account of its rapid flight in 

 the evening. The caterpillars eat the roots of Hop and 

 other plants, are cream with brown heads, and if inch 

 long or more. The male is 2 inches in expanse, and the 

 wings are white above, the rest being tawny. The female 

 is 3 inches in expanse ; the fore wings are yellow above, 

 with orange, wavy lines, while the hind wings are dusky 

 or tawny. They rest among rank herbage and hedges 

 during the day, and fly by night. The remedy, when 

 plants are infested and drooping is to examine the roots 

 and pick out the large caterpillars. Burdocks, Nettles, 

 and other rank herbage in the neighbourhood should 

 be cleared away, as the moths also feed on such plants. 



OUGETNIA. (From a place named Ougeine. Nat. 

 ord. Leguminosae.) 



Evergreen stove tree. Cuttings of half-ripe wood in 

 sand in a close case, with bottom-heat. Loam, peat, 

 and sand. 

 O. dalbergioi'des (Dalbergia-like). White. E. Ind. 



OURA'TEA CUSPIDA'TA. See GOMPHIA CUSPIDATA. 



OURTSIA. (From ouros, a mountain; natives of 

 mountains. Nat. ord. Scrophulariaceae.) 



Hardy or half-hardy herbs, best in a cold frame. Seeds ; 

 divisions in spring. Loam, leaf-mould, and sand. 

 O. ccespito'sa (tufted). White. New Zealand. 

 cocci 'nea (scarlet), i. Scarlet. June. Island of 

 Chiloe. 1862. 



