62 



Pi'oEUS — Black, with a brownish tinge ; 

 red, almost concealed by admixture 

 with intensely deep grey. 



Pib'tds — Painted. Example, Bignoniapicta. 



Pi'leds— A cap. Pile'olum — A little cap. 

 PlLlDlClt — Like a cap. (See cap of 

 Mushroom.) 



PlUF'KRUS — Bearing hair. Pilose', 

 PiLo'ptis — Hairy. Pilosius'culub — 

 Somewhat h9.iry.' Pilus— Hair. (See 

 the common Carrot plant.) 



Pin'na — A leaflet. Pinnate, Pinna'ted, 

 Pinna'tds — A compound leaf, with 

 leaflets arranged along each side of 

 the rhachis. When the arrange- 

 nient is confined to pairs, it con- 

 stitutes the "equally or pari-pin- 

 nate"; when teitainated by an odd 

 leaflet, the "unequally or impari-pin- 

 nate." Pinnat'ifid, Pinnati'eidus — 

 V/hen the lateral incisions of a simple 

 leaf extend towards the axis, and 

 approach the form termed Pmnati- 

 seo'tus, a form of pinnatifid, where the 

 incisions are deep. Pinnate — Extend- 

 ing to the axis. 



Pin'nulb. — A leaflet of a pinna or secon- 

 dary leaflet. 



Pip — In floriculture, is a single bloom, 

 where several grow upon a common 

 stalk, as in the Affapanthus, Foly- 

 anthus. Auricula, &o. The pips thus 

 growing together are described as a 

 truss. (See "Truss.") 



Pl'sil^OBM, Pisifor'mis— About the size 

 and shape of a garden Pea. 



Pis'TIL, Pistil'lum — Either synonymous 

 with "Carpel," when each portion of 

 the innermost floral organ is free ; or 

 it is composed of the aggregation of 

 the carpels, when these unite and 

 thus form a compound organ. It is 

 essetitially composed of the ovaiy, 

 with its ovules ; and the stigma or 

 stigmata, with sometimes an inter- 

 vening style. Flowers are termed 

 pistillate when they bear a pistil, but 

 either no stamens at all or only im- 

 perfect ones. 



Pith, Medul'la — A cylinder of cellular 

 tissue, occupying the centre or longi- 

 tudinal axis of the stem. Jt is active 

 only in young stems or branches, 

 becomes dried up and compressed as 

 the wood hardens, and often finally 

 disappears, or is scarcely distinguishable 

 in old' trees. 



PJiAOEN'ta, ^ Plaoenta'biuhi— The part of 

 the inside of the ovary to which the 

 ovules are attached ; sometimes a mere 

 point or line on the inner surface, often 

 more or _ less thickened or raised. 

 Placentatjon is therefore the indication 

 of the part of the ovary to which the 

 ovules are attached. Placentas are 

 axile (see fruit of ffj/pericujn), when 

 the ovules are attached to the axis or 

 centre — that is, in plurllocular ovaries, 

 when they are attached to the inner 

 angle of each cell ; in unilocular simple 

 ovaries, which have almost always an 

 e^icentricfil style or stigma, when the 

 ovules are attached to the side of the . 

 ovary nearest to the style ; in unilocular 



compound ovaries, when the ovules are 

 attached to a central protuberance, 

 . column, or axis rising up from the base 

 of the cavity. If this column does not 

 reach the top of the cavity, the placenta 

 is said to be free and central. (See 

 fruit of Dianthus, &o.) Parietal (See 

 fruit of Violet.) When the ovules are • 

 attached to the inner surface of' the 

 cavity of a one-celled compound ovary. 

 Parietal placentas are usually slightly 

 thickened or raised line.s, sometimes 

 broad surfaces nearly covering _ the 

 inner surface of the cavity, sometimes 

 projecting far into the cavitj', and con- 

 stituting partial dissepiments, or even 

 meeting in the centre, but without 

 cohering there. In the latter case the 

 distinction between the one-celled and 

 the several-celled ovary sometimes 

 almost disappears. 

 Pla'gios — Oblique, as in Plagianthus. 

 Plane, Pla'nus — j?)at ; where a surface is 



perfectly level. 

 Planius'oulus— Where a surface is nearly 



but not qiiite level. 

 Plant — In a botanical sense, ■ includes 

 every being which has vegetable life, 

 from the largest trees to the minute 

 Algffi of the poads. 

 Planting — Do not plant trees or shrubs 

 deep. This i.s the cause very often of 

 stunted growth, early decay, and even 

 death itself. Deep planting is often 

 done with the idea that the tree will 

 stand more firmly. When removiog, 

 never allow the roots to be exposed 

 longer than necessary, and see that as 

 little injury as possible is done to them 

 in the operation of removal. 

 Plat'ts, in compounds, signifies "broad." 

 Platyoak'pus— Broad fruit. Platy- 

 phtl'lub— Broad leaf. Plattstigma — 

 Broad stigma. Plat'ys — Large or 

 broad; in composition, Platy ; in 

 Latin, Latus and Late, as the Stag's- 

 horn fern, Plati/cerium. 

 Ple'ion— Several ; in composition, Ple'io ; 



iii Latin, Plu'ri. 

 Ple'iopiiyllcs— Where no buds, and con- 

 sequently ^ no branches are developed 

 in the axils of leaves, and the stem 

 supports these only. 

 Ple'nus— Full. Synonym for "Double," 

 where the stumen'-, and pistils become 

 petaloid. Al.-o where a stem is solid, 

 in contradistinction to "hollow" or 

 "fistular." 

 Pleceocae'pi— Mosses with the fructifica- 

 tion ijroceeding laterally from the .axils 

 of the leaves. 

 Pleueen'ohyma— Woody tissue. 

 Pleuhospee'mus— Ribbed seed. Pleueo- 

 cae'pds— Ribbed fruit, as the fiuit of 

 Pieu.s plcurocarji.i, a Fig of Northern 

 Queensland. 



Plbxb-oblas'tus— When cotyledons -lise 

 above ground in germination, but do 

 not assume tlio appearance of leaves. 



Plicate', Plioa'tus— Folded together in 

 longitudinal plaits, regularly disposed. 

 Plica'tdlatr— Minutely plaited. (See 

 Aloe pUcatilis.) 



