PSEUD-, PSEUDO- 541 



Prothallus, the sexual pi. ; Pteridophyta, Filicineae, &c. 



Protium Barm. f. Burseraceae. 50 trop. Am. Some yield good 



balsam resins. 

 Proto- (Gr. pref.), first, earliest; -corm, Lycopodiaceae; -gyny, see 



Dichogamy; -plasm, the living substance of pi. 

 Protolirion Ridl. (Petrosavia p.p.). Liliaceae (i). i Mai. Penin. 

 Protomegabaria Hutchinson. Euphorbiaceae (A. I. i). 2 trop. Afr. 

 Protorlius Engl. Anacarcliaceae (3). 9 Madag., S. Afr. 

 Protoschwenkia Solereder. Solanaceae (5). i Bolivia. 

 Proustia Lag. Compositae (12). 10 Andes, temp. S. Am. 

 Proximal, nearest to axis. 



Pruinose, with waxy powdery secretion on the surface. 

 Prumnopitys Phil. = Podocarpus L'Herit. p.p. (Conif.). 

 Prune, Primus domestica L. 



Prunella L. (Brnnella Tourn.). Labiatae (vi). P. vulgaris L. (self- 

 heal) cosmop (incl. Brit.), 5 Medit. Eur. The fr. K is closed and 

 points up in dry air, but opens and stands horiz. in damp. 

 Prunus (Tourn.) L. (incl. Ai/iygdalus'Yovun., Cerasus Tourn.). Rosaceae 

 (v). 85 N. temp.; a few trop. /'. insititia L (bullace), P. spinosa 

 L. (sloe'or blackthorn), P. avium L. (gean), P. Padits L. (bird-cherry), 

 in Brit. The fl.-buds are laid down in August or September of the 

 preceding year. There is i cpl., which gives rise to a drupe, while the 

 hollow recept. usu. falls away. Many sp. are cult, for their fr., e.g. 

 P. Armeniaca L. (apricot), P. domestica L. (plum, prune), P. Amyg- 

 dalus Stokes (almond), P. Persica Stokes (peach, with its smooth- 

 fruited variety the nectarine), P. Cerasus L. (cherry), &c. P. Lauro- 

 cerasus L. is the cherry laurel ; it has extra-floral nectaries on the backs 

 of the L, showing as brownish patches against the midribs. The spines 

 of some sp. are axillary, as in Crataegus. 

 Pruriens (Lat.), causing itching. 

 Przewalskia Maxim. Solanaceae (2). 2 C. As. 

 Psacalium Cass. = Senecio Tourn. p.p. (BfJ) Cacalia L. p.p. 

 Psamma Beauv. =Ammophila Host. (Gram.). 

 Psammanthe Reichb. Caryophyllaceae (inc. sed.). Nomen. 

 Psammisia Klotzsch. Ericaceae (m. 2). 35 Andes, Guiana. 

 Psammogeton Edgew. Umbelliferae (in. 2). 4 W. As. 

 Psammogonum Nieuwland (Polygonella p.p.). Polygon, (n. 2). 2 N. 



Am. 



Psammomoya Diels et Loesener. Celastraceae. 2 Austr. 

 Psammophilous, sand-loving. 



Psammotropha Eckl. et Zeyh. Phytolaccaceae (Aizo. Bff.). 5 S. Afr. 

 Psathura Comm. ex Juss. Rubiaceae (n. 5). 6 Madag., Mascarenes. 

 Psathyranthus Ule. Loranthaceae (i). i Upper Amazon. 

 Psathyrotes A. Gray. Compositae (8). 4 W. U.S., North Mexico. 

 Psedera Necker ex Greene (Ampelopsis, &c. p.p.). Vitaceae. 10 N. 



temp, and subtrop. 



Psednotrichia Hiern. Compositae (3). i trop. Afr. 

 Pselium Lour. (Pericampylns BH.}. Menispermaceae. i Cochinchina. 

 Psephellus Cass. = Centaurea L. p.p. (Comp.). 



Pseud-, pseudo- (Gr. pref.), false; -axis, a sympodium; -berry, Gaul- 

 theria, Urera, Viscum ; -bulb, Orchidaceae ; -carp, the product of the 



