PO 5 2 3 



Pleurostelma Baill. Asclepiadaceae (n. i). i Madag. 



Pleurostelma Schlechter (Schlechterella EP.). Asclep. (i). i E. Afr. 



Pleurostemon Raf. Inc. sed. i N. Am. 



Pleurostylia Wight et Arn. Celastraceae. 2 S. Afr. to India. 



Pleurothallis R. Br. Orchidaceae (n. 8). 500 trop. Am., W.I. 



Pleurothyrium Nees. Lauraceae (i). i Peru. 



Plicate (vernation), folded several times. 



Plicouratea Van Tiegh. (Gomphia p.p.). Ochnaceae. 8 Brazil. 



Plinthus Fenzl. Aizoaceae (u). i Cape Colony. 



Pliogynopsis O. Ktze. (Pleiogynium Engl.). Anacard. (2). i N.E. 

 Austr. 



Plocama Ait. Rubiaceae (n. /). i Canaries. 



Plocaniophyllon T. S. Brandegee. Rubiaceae (i. 8). i Mexico. 



Plocoglottis Hlume. Orchidaceae (119). 10 Malay Archipelago. 



Plocosperma Benth. Loganiaceae. 2 Guatemala, Mexico. 



Pluchea Cass. Compositae (4). 30 trop. and subtrop. 



Plukenetia L. Euphorbiaceae (A. n. 2). 12 warm Am., Afr., As. 



Plum, Primus domestica L.; coco-, Chrysobalanus; date-, Diospyi-os 

 Kaki L. f. ; hog-, Spondias; Madagascar-, Flaconrtia ; marma- 

 lade- (W.I.), Lucitma iiiammosa Gaeitn. f.; sapodilla -, Achras 

 Sapota L.; tamarind-, Dialiuin inditin L. ; -tree, seaside (W.I.), 

 Ximenia. 



Plumbagella Spach (Plumbago p.p. J3H.). Plumbaginaceae. i E. As. 



Plumbaginaceae (EP., BH.). Dicotys. (Sympet. Plumbaginales ; Pri- 

 mulales BH.}. 10 gen., 280 sp. cosmop., but esp. on salt steppes and 

 sea-coast. Perennial herbs or shiubs with narrow I., on whose surface 

 water glands occur, or sometimes chalk glands (cf. Saxifraga). Infl. 

 of various types, racemose and cymose (see Plumbago, Ceratostigma, 

 Statice, Armeria), bracteolate. Fls. reg., $ , 5-merous, the odd sepal 

 post. K persistent, C often nearly polypetalous, conv., A 5, epipet. 

 and opp. the petals, G (5), i-loc., with basal placenta, and one anatr. 

 ov. , whose stalk curves up to the top of the loc. and causes the 

 micropyle to be directed upwards. Styles or stigmas 5. Nut; embryo 

 straight, in floury endosp. The fam. is distinguished from Primulaceae 

 by the ovary and styles. Chief genera: Plumbago, Ceratostigma, 

 Acantholimon, Armeria, Statice, Limoniastrum. 



Plumbaginales. The 3rd order of Dicots. Sympetalae. 



Plumbago Tourn. ex L. Plumbaginaceae. 10 cosmop. Racemose infl. 



K with glandular hairs, aiding seed-dispersal. 

 Plumbeus (Lat.), lead-coloured. 



Plumeria Tourn. ex L. Apocynaceae (i. 3). 45 warm Am. Several 

 cult. orn. perf. fls. (offered in Buddhist temples), esp. P. acutifolia 

 Poir (temple tree, frangipani). 

 Plummera A. Gray. Compositae (6). i Arizona. 

 Plumose, feathered. 



Plumule, the stem bud of the embryo pi. in the seed. 

 Pluri- (Lat. pref.), many-. 



Pneumatophore, erect root with aerenchyma; cf. Mangroves. 

 Pneumonanthe Gleditsch (Gentiana p.p.). Gentian, (i). 25 N. Am. 

 Po (fl. -class), fls. offering pollen only to visitors, Anemone, Hypericum, 

 Papaver, Rosa, Thalictrmn, Verbascuin. 



