OUVIRANDRA 



624 



OXALIS 



O. cockaynia'na (Cockaynian). J-J. Pure white. New 



Zealand. 1910. 

 macrophyila (large-leaved). J. White, sometimes 



streaked purple. New Zealand. 1909. 

 Pea'rcei(Peaice's). . Crimson, scarlet. Chili. 1863. 



OUVIRA'NDRA. (From ouvirandrano, the water-yam 

 of the natives. Nat. ord. Naiadacea;.) 



Stove aquatic herbs, with submerged or floating leaves, 

 reduced, as a rule, to the venation and skeleton-like. 

 The common one is known as the Lattice Leaf or Lace- 

 leaved Plant, from this circumstance. Seeds and 

 divisions. Loam and sand. The water should be kept 

 at a temperature of 70 to 75, and, if a small, dripping 

 current of water is allowed to run constantly into the 

 tank it will serve to keep the leaves clean. 

 O. berneria'na (Bernerian). 2. Pink. August. Mada- 

 gascar. 1858. 



fencstra'lis (window-like). 2. White. August. 

 Madagascar. 1855. 



OVARY. The central organ or part of a flower, which 

 contains the ovules or young seeds before fertilisation. 

 In the pea this consists of a single leaf, infolded and bear- 

 ing the seeds on its margins. In the Aquilegia there 

 are five of these ovaries or modified leaves ; in the 

 Pansy there are only three, but they are united in one 

 piece, with the ovules on their sides ; and in the Lily 

 there are three, with their edges turned inwards and 

 meeting in the centre, forming a three-celled ovary, with 

 the ovules attached to the axis. Thus there are many 

 modifications, which serve as characters for distinguish- 

 ing natural orders and genera. The ovary becomes the 

 young fruit immediately fertilisation has been effected. 

 The ovary consists of an ordinary leaf or leaves modified 

 for the purpose of bearing ovules and seeds. In double 

 flowers the leaves forming the ovary often revert to an 

 ordinary green leaf, as in the double cherry, or to a petal 

 in the tuberous Begonia. 



OVULE. The small structures in young ovaries, and 

 which become the seeds, after fertilisation. It usually 

 consists of two coats, and after fertilisation it contains 

 the embryo, which, in the bean, consists of two seed 

 leaves, the radicle, or primary root, and plumule, or 

 primary stem, with its leaves. 



O'XALIS. Wood Sorrel. (From oxus, acid ; the acid 

 taste of the leaves. Nat. ord. Oxalids [Geraniaceae]. 

 Linn. \o-Decandria, 4-Pentagynia.) 



Natives of South Africa, except where otherwise stated. 

 Hardy annuals, seed in open border, in April, in a shady 

 place ; perennials, by division and by seeds ; tuberous 

 and bulbous ones, by offsets ; the tender ones succeed in 

 a cool temperature in winter, if dry, and frost excluded ; 

 shrubby species, by seeds and cuttings in sandy soil, 

 under a bell-glass, and grown in sandy loam and fibrous 

 peat ; all the bulbous kinds the least tender should be 

 kept dry in winter, and the shrubby have the greenhouse. 



HARDY ANNUALS. 



O. cornicula'ta (small-horned). J. Yellow. August. 



Temperate and tropical regions (Britain). 

 ,, atropurpu'rea (dark-purple). Leaves dark purple. 

 ,, ru'bra (red). SeeO. CORNICULATA ATROPURPUREA. 

 Dille'nii (Dillenius's). See O. CORNICULATA. 

 Iciviga'ta (smooth), j. Purple. June. 1818. 

 microphy'lla (small-leaved). See O. CORNICULATA. 

 proli'ferum (proliferous). See BIOPHYTUM PROLI- 



FERUM. 



sensiti'va (sensitive). See BIOPHYTUM SENSITIVUM. 

 stri'cta (erect). J-i. Yellow. July. N. Amer. 



(England). 1658. 



HARDY HERBACEOUS. 



O. Acetose'lla (Acetosella). $. White, with purple veins. 

 May and June. N. temperate regions (Britain). 

 " Wood Sorrel " 



ro'sea (rosy). J. Rose. May and June. 

 Lyo'nii (Lyon's). See O. CORNICULATA. 



HARDY BULBS. 



0. adenophy'lla( gland-leaved). . Rosy-purple, crimson. 



Chili. 1906. 



a'lba (white- ftowgred). }. White. May. S. Amer. 

 1836. 



O america'na (American). See O. ACETOSELLA. 

 Bowie 'i (Bowie's). See O. PURPURATA. 

 crena'ta (notched). 3. Yellow. September. Peru. 



1829. 



e'legans (elegant). . Purple. July. Peru. 

 enneaphy'lla (nine-leaved). ^. White, or tinted pink. 



June. Falkland Islands. 1876. 

 ,, hi'rta (hairy). J. Lilac. October. 1787. 

 i> fv'lgida (fulgid). . Crimson. October. 1820. 

 ,, rosa'cea (rose). . Rose. October. 1793. 

 loba'ta (lobed). . Yellow. October. Chili. 1823. 

 ,, orega'na (Oregon). N.W. Amer. 

 ,, purpura'ta (purple). J. Purple to crimson. August. 



1822. 



,, rube'lla (small-red). See O. HIRTA ROSACEA. 

 smt/Atfl'na(Smithian). i~J. Bluish or lilac. S.Africa. 

 vesper tilio'nis (bat's). J. Mexico. 

 viola'cea (violet-coloured). . Violet. May. N. 

 Amer. 1772. 



GREENHOUSE HERBACEOUS. 



0. alsinoi'des (Alsine-like). Chili. 

 Andrieu'xii (Andrieux's). Gardens. 

 ,, anthelmi'nthica (anthelmintic). Purple or lilac. 



Abyssinia. 1893. 



arena'ria (sand). J. Purple. Chili. 1875. 

 ,, articula'ta (jointed). Bright mauve-pink. Argentina. 



1870. 



,, bine'rvis (two-nerved). White. Root tuberous. 

 bipuncta'ta (two-spotted). See O. CORYMBOSA. 

 Catherine 1 nsis (Santa Catherina). White. Santa 



Catherina, Brazil. 1887. 

 corymbo'sa (corymbose). White. July, August. 



Mascarene Islands. 1828. 

 martia'na (Martian). Yellow. July. Brazil. 



1829. Stove. 



crassicau'lis (thick-stemmed). Peru and Mexico. 

 Cummi'ngii (Cumming's). J. Golden. September. 



Chili. 1831. 

 di'scolor (two-coloured). Violet, crimson. July. 



Mexico. 1844. 

 floribu'nda (bundle-flowered), ij. Red. July. S. 



Amer. 1827. 

 a'lba (white), i. White. 



carule'scens (bluish), i. Pale blue. 

 lilaci'na (lilac), i. Lilac. 

 isope'tala (equal-petaled). S. Amer. (?). 

 lasia'ndra (downy-stamened) of Graham. See O. 



FLORIBUNDA. 



,, lasia'ndra (downy-stamened) of Zuccarini. ij. Pink. 



May. Mexico. 1840. 



latifo'lia (broad- leaved). $. Violet. Mexico. 

 martia'na (Martin's). See O. CORYMBOSA MARTIANA. 

 ,, mojave'nsis (Mojavan). Gardens. 

 na'tans (floating). . White. October. 1795. 



Aquatic. 

 Nece'i (Nea's). 



,, glabrci'ta (smooth). White. Trop. Amer. 1872. 

 Otto'nis (Otto's). See O. LOBATA. 

 palu'stris (marsh). Lilac. May. Brazil. 1828. 



Stove. 



, peduncula'ris (long-stalked). Ecuador. 

 , pere'nnans (perennial). See O. CORNICULATA. 

 , pube'scens (downy). Peru. 

 , racemo'sa (racemose). See O. ROSEA. 

 , re' pens (creeping- stalked). See O. CORNICULATA. 

 ,, ro'sea (rosy). . Rose. March. Chili. 1826. 

 ,, ru'bro-ci'ncta (red-edged), i. Yellow. September. 



Guatemala. 1841. 

 sca'ndens (climbing). Colombia. 

 Si'msii (Sims's). $. Crimson. April. Chili. 1822. 

 tubero'sa (tuberous). 3-5. Chili. 1853. Root 



tuberous. 



u'rbica (city). See O. CORYMBOSA. 

 valdivia'na (Valdivian). J I. Yellow. Chili. 1862. 



GREENHOUSE BULBS. 



0. ambi'gua (ambiguous) of Jacquin. See O. MUTABILIS. 

 ,, arcua'ta (bowed). See O. LINEARIS. 

 ,, asini'na (ass' s-eared) . J. Yellow. November. 1792. 

 ,, bi'fida (cloven-leaved), f . Violet. September. 1791. 

 bifu'rca (two-forked). f-i. Pink. S. Africa. 

 ,, brasilie'nsis (Brazih'an). J. Rose. October. Brazil. 



1829. 

 Burma'nni (Burmann's). J. Purple. June. 1820, 



