PROMEN^EA 



709 



PROTEA 



PROMENffi'A. (Nat. ord. Orchids [Orchidaceae]. 

 Linn. zo-Gynandria i-Monandria. Now referred to 

 Zygopetalum.) 

 P. citri'na (citron-flowered). See ZYGOPETALUM XANTHI- 



NUM. 



lentigino'sa (freckled). See ZYGOPETALUM LENTI- 



GIN-OSUM. 

 Rollissonii (Rollisson's). See ZYGOPETALUM ROLLIS- 



SONII. 

 stapelioi'des (Stapelia-like). See ZYGOPETALUM 



STAPELIOIDES and varieties. 

 xanthi'na ( yellow-flowered) . 



XANTHINUM. 



See ZYGOPETALUM 



PRONA'YA. (Named after M. Pronay, a French 

 naturalist. Nat. ord. Pittosporads [Pittosporacecae]. 

 Linn. *>-Pentandria, i-Monogynia. Allied to Sollya.) 



Greenhouse evergreen twiner. Cuttings of young 

 shoots in sand, under a glass ; sandy loam and peat. 

 Winter temp., 40 to 48. 



P. e'lcgans (elegant). 4. Blue. August. Australia. 

 1837. 



PROPAGATING FRAME. Where much propagation 

 has to be accomplished at different periods of the year, 

 and especially in spring and autumn, it is necessary to 

 have a propagating frame or case fitted up over the hot- 

 water pipes in a house with a temperature similar to 

 that of a stove, and in which it would be easy to maintain 

 a bottom-heat of 60 to 80, according to the plants 

 being rooted. Few stove plants would require the latter 

 temperature, and the atmosphere of the same house 

 would necessarily always be lower than that of the 

 frame. The frame may be of wood or bricks, with a 

 movable glass light on the top. The bottom of the 

 frame may be of wood, corrugated iron, or roofing slates, 

 and at least a foot above the hot-water pipes. On the 

 bottom, 6 inches of cocoanut fibre or fine oak tan should 

 be laid in which to plunge the pots containing cuttings. 

 In most cases the frame should be closed at night, but 

 as the temperature rises during the day a label may be 

 used to tilt up the sash for the escape of superfluous 

 vapour to prevent damping of the cuttings by drip from 

 condensation. 



PROPS are the supports required by plants to sustain 

 them in a desired position. They must vary in height 

 and strength accordantly with the plant to which they 

 are applied, and should always be as slight as is con- 

 sistent with efficiency. Nothing looks worse than a 

 disproportioned prop ; indeed, it should be concealed 

 as much as possible. The props for peas should be of the 

 branches of the hazel, or of frames and strings, which 

 we prefer ; for runner kidney beans, rods of ash. For 

 flowers, stout iron wire, painted brown or dark green, is 

 to be preferred. Whenever wooden props are used, 

 the end thrust into the ground should be previously 

 charred ; if this precaution be taken, and when, no 

 longer required, they are stored in a dry shed, they will 

 last for several seasons. Props should be placed on 

 the south sides of the plants, as they incline in that 

 direction, as being most light. 



The fewest possible number of props is one of the 

 evidences of good cultivation and good taste. 



PROSERPINA' CA. Mermaid Weed. (From proser- 

 puzo, proserpuo, or prcserpo, to creep forward ; the 

 stems are creeping. Nat. ord. Haloragaceae.) 



Half-hardy water plants. Cuttings in sand in a deep 

 pan of water. May be planted on the shallow edges of 

 ponds, or ornamental water in summer ; but reserve 

 plants should be grown in pans for preservation in a 

 cold frame during winter. 

 P. palu'stris (marsh). White. June to September. N. 



Amer. 1818. 



pectina'ta (comb-like-leaved). White. June to Sep- 

 tember. N. Amer. 1821. 



PROSO PIS. (A name of a plant employed by Dios- 

 corides. Nat. ord. Leguminous Plants [Leguminosa>l. 

 Linn. lo-Decandria, i-Monogynia. Allied to Aden- 

 anthera.) 



Stove evergreen trees. Cuttings of young shoots, 

 when a little firm, taken off close to the older stems, in 

 sand, under a bell-glass, and in a little bottom-heat ; 

 sandy loam, and sandy, fibrous peat. Winter temp., 

 45 to 55, and rather dry ; summer, 60 to 85, and 



plenty of moisture at root and top. Siliqua' strum stood 

 several years against a wall in the Horticultural Society's 

 Gardens. All the plants mentioned below, except Jacari 

 and strombulifera, are sometimes regarded as forms of 

 P. juliflora. 

 P. cumane'nsis (Cumana). 20. White, green. Cumana. 



1822. 

 ,, domingc'nsis (St. Domingo). 30. Yellow, green. 



St. Domingo. 1818. 



du'lcis (sweet). 20. White, green. New Spain. 1818. 

 ,, ho'rrida (horrid). 30. Yellow. Jamaica. 1800. 

 Jaca'ri (Jacari). Gardens. 

 juliflo'ra (July-flower). 30. White. Trop. Amer. 



1826. " Algarobo." 

 Siliqua'strum (silique-podded). 30. White. Chili. 



1827. 

 ,, strombvli'fera (cone-bearing). 8. S. Amer. 1825, 



PROSTANTHE'RA. (From prostheke, appendage, and 

 anthera, anther ; connections of the anthers are spurred. 

 Nat. ord. Labiates [Labiatae]. Linn. n-Didynamia, 21- 

 Angiospermia.) 



Greenhouse evergreen shrubs, from Australia. Fre- 

 quently by seeds in a slight hotbed, in April ; generally 

 by cuttings of the young shoots in sandy soil ; sandy 

 peat, with plenty of fibre in it, and a portion of broken 

 pots and charcoal nodules mixed with it, and good 

 drainage. Winter temp., 38 to 48. Lasia'nthos stood 

 some years against a wall in the Gardens of the Horti- 

 cultural Society. 

 P. can' lea (blue-flowered). 3. Blue. May. 1824. 



cunea'ta (wedge-shaped). 2. White. June. 



denticula'ta (toothed). 4. July. 1824. 



m/?e*rt/o7ia(Empetrum-leaved). 2. Violet. August. 

 1829. 



lasia'nihos (woolly-flowered). 3. Purple, lilac. June. 

 1808. 



ni'vea (snowy). Leaves hoary. 1867. 



prunelloi'des (Prunella-like). Purple. April. 1826. 



,, retu'sa (abruptly-ended). See P. ROTUNDIFOLIA. 



rotundifo'lia (round- leaved). 2-3. Purple. July, 

 August. 1824. 



viola'cea (violet). 5. Violet. June. 1820. 



PRO'TEA. (From Proteus, a sea-god, who could 

 transform himself into any shape ; referring to the 

 diversity of the species. Nat. ord. Proteads [Proteaceae]. 

 Linn. 4-Tetrandria, \'Monogynia.) 



Greenhouse evergreen shrubs, from South Africa. 

 Cuttings of ripened young shoots, cut close to a joint, 

 and the leaf there, and perhaps the one above, removed, 

 the rest allowed to remain, inserted firmly in sand, over 

 a little sandy loam, the pots being three-parts filled with 

 drainage ; the pots, with their cuttings, may then be 

 set in a cold pit, and at such a distance from the glass 

 that shading will be little required ; the glasses should 

 also be frequently wedged up at night to prevent damp- 

 ing ; fibrous loam, with a good portion of sand, and about 

 a fourth part consisting of a mixture of charcoal, free- 

 stone, broken pots, and a little peat. Winter temp., 38' 

 to 48. These have not been tried against a wall, as 

 they should be, with movable lights, or reed coverings, 

 to be taken away in summer. 

 P. acau'lis (stemless). ij. Purple. July. 1802. 



acero'sa (sharp). Purple. Spring. 1803. 



,, acumina'ta (sharp-pointed). 3. Purple. May. 1809. 



,, amplexicaulis (stem-clasping), ij. Purple. Febru- 

 ary. 1802. 



anemonifo'lia (Anemone-leaved). See ISOPOGON 



ANEMONIFOLIUS. 



angusta'ta (narrow-leaved), i. Purple. June. 1820. 

 argentifio'ra (silvery-flowered). See SERRURIA TRITER- 



NATA. 



caspito'sa (tufted). See P. TURBINIFLORA. 

 canalicula'ta (channel-leaved). 3. Pink. July. 1800. 

 ca'ndicans (white). See LEUCOSPERMUM TOMEN- 



TOSUM. 



cocci'nea (scarlet). 5. Scarlet. June. 1824. 



coni'fera (cone-bearing). See LEUCADENDRON STRIC- 



TUM. 



corda'ta (heart-leaved), ij. Purple. April. 1790. 

 corona' 'ta (crowned). See P. FORMOSA. 

 corymbo'sa (corymbose) . See LEUCADENDRON CORYM- 



BOSUM. 



cynaroi'des (artichoke-like), ij. Purple. August. 

 1774- 



