PANDANUS 485 



Palumbina Reichb. f. (Oncidinni p.p. BH.). Orchid, (n. 19). i 

 Guatem. 



Pamburus Swingle. Rutaceae (v. ). i India. 



Pampas, the grassy plains of S. temp. Am. ; - grass, Cortaderia argentea 

 Stapf. 



Pampelmousse, shaddock, Citrus decumana Murr. 



Pamphalea DC. Compositae (12). 5 temp. S. Am. 



Pampliiiia Mart. Styracaceae. 3 Brazil. 



Panama hats, Carludovica; -rubber, Castilloa elastica Cerv., &c. 



Panargyrus Lag. Nassauvia Juss. p.p. (Comp.). 



Panax Linn. (BH. inch Cheirodendron Nutt., Nothopanax Seem.). 

 Araliaceae (2). 6 trop. and E. As., N. Am. For ginseng see Aralia. 



Pancheria Brongn. et Gris. Cunoniaceae. 10 New Caled. 



Pancovia Willd. (Erioglossum BH.). Sapindaceae (i). 3 trop. W. Afr. 



Pancratium Dill, ex L. Amaryllidaceae (i). 12 Medit., trop. As. 



Panda Pierre. Pandaceae. i trop. W. Afr. Fl. cyclic, dioec., hetero- 

 chlam . G (3) , each with one pend. orthotr. ov. Drupe with 3 one-seeded 

 chambers. 



Pandaceae (EP.}. Dicots. (Archichl. Pandales). Only gen. Panda, q.v. 



Pandales. The 22iid. order of Dicots. Archichl. Only fam. Pandaceae. 



Pandanaceae (EP., BH.). Monocots. (Pandanales; Nudiflorae BH.). 

 3 gen., 225 sp. , char. pi. of the Old World tropics, but a few warm 

 temp. Mostly sea-coast or marsh pi. with tall stems supported upon 

 aerial roots, frequently branched; buds are found in all axils, and the 

 branching appears dichotomous ; some are climbers. The aerial roots 

 have marked root-caps of membranous texture. L. in 3-ranked phyllo- 

 taxy, but stem usu. twisted so that they appear to run in well-marked 

 spirals, whence the name of screw-pines. L. parallel-veined, long, 

 and narrow, with open sheath and usu. thorny margin ; generally 

 sharply bent downwards at the middle, and corrugated like a palm 1. 

 Infl. term., with a few bract-like 1. at the base going^ gradually 

 over into the foliage L, usu. a racemose spadix with neither bracts nor 

 bracteoles to the individual fls., which are somewhat difficult to make 

 out. The <? fls. in sp. of Freycinetia have a rudimentary G, but in 

 the rest of the fam. they have not. The floral axis of the 3 fl. bears 

 a number of sta. , arranged in a raceme or umbel-like manner upon it. 

 The G in the ? fl. of oo cpls. in a ring, i-loc. or oo -loc., the union being 

 complete, or it may be reduced, even to i cpl., or to a row of cpls. 

 arranged transv. Stigmas sessile. Ovules anatr. Berry or multi-loc. 

 drupe, often containing hollow spaces which aid it in swimming. 

 Seed with oily endosp. The plants yield thatch, &c. Genera: Sara- 

 ranga (infl. paniculate; fls. pedicelled ; drupe), Freycinetia (infl. 

 capitulate or spiqate; fls. sessile; berry), Pandanus (infl. as last; fls. 

 sessile; drupe). 



Pandanales. The ist order of Monocots. 



Pandaneae (BH.) Pandanaceae. 



Pandanophyllum Hassk. = Mapama Aubl. p.p. (Cyper.). 



Pandanus Rumph. ex L. f. Pandanaceae. 150 palaeotrop. (screw- 

 pines). Trees with flying-buttress roots. Fls. in large heads, enclosed 

 in spathes. f of oo sta., arranged in various ways upon the axis, ? of 

 i oo cpls., free or united. Each gives a drupe containing as many 



