POLYPODU'M 



POLYSTICHUM 



1395 



oc. Lvs. pinnate. 



D Fronds covered with flat scales underneath. 

 polypodioides, A. S. Hitchcock. Lvs. 2-6 in. long, an 

 inch or more wide, with entire pinnae; veins indistinct, 

 from the thick texture. Va. and southern 111. to Brazil; 

 commonly growing on trees in the southern states. 



1883. Polypodium vulgare (X 



DD. Fronds smooth beneath. 

 E. Pin nee broad at base and often confluent. 



Califdrnicum, Kaulf. Lvs. 4-9 in. long, 1-5 in. wide, 

 cut into finely toothed pinnae which are mostly confluent 

 at the base. California. Has much the habit of the 

 European forms of P. vulgare. 



Catharinae, Langs. & Fisch. Lvs. 6-12 in. long, 3-5 in. 

 wide, with numerous nearly opposite pinnae which are 

 dilated at the base, contracted just above the base, and 

 slightly enlarged and bluntly rounded at the tip; sori 

 large near the midrib. Brazil. 



EE. Pinnce narrowed and distinct at base 

 fraxinifdlium, Jacq. Lvs. 2-4 ft. long, 12-18 in. wide, 

 on firm stalks 1-2 ft. long; pinnae 4-9 in. long, with a 

 tough, somewhat leathery texture and entire margin. 

 Columbia to Brazil and Peru, 

 subauriculatum , B 1 u m e . 

 Stalks 6-12 in. long, glossy, 

 from wide -creeping root- 

 stocks: Ivs. 2-3 ft. long, 8-12 

 in. wide; sori in a single row 

 immersed in the leaf. India 

 to Australia. 



AAA. Veins (primary) dis- 

 tinct from midrib to the 

 edge, connected by parallel 

 transverse veinlets form- 

 ing rows of similar 

 areolce. 



B. I/vs. elongate, simple, 

 smooth beneath. 



Phyllitidis, Linn. Lvs. 1-3 

 ft. long, 1-4 in. wide, with an 

 acute point, and the lower 

 part narrowed gradually; 



-ows of 6-12, usu- 



'aTIy'witn' Wfi^j/m^h. Fla.- to 

 Brazil. This species might 

 more justly be placed in the 

 genus Campyloneuron. 

 BB. ir.s. icith under surface 

 tomentose. 



Lingua, Swz. Lvs. 4-8 in. 

 long, 1-4 in. wide, the apex 

 often cuspidate, the base nar- 

 rowed or rounded; upper sur- 

 face naked, the lower matted 

 with reddish cottony brown; 

 sori in close rows of 4-6 each. 

 Japan to Ceylon. This spe- 

 cies and the next are often placed in the genus Nipho- 

 bolus. 



tricuspe, Swz. Lvs. hastate, 2-4 in. each way, with a 

 central lanceolate-triangular lobe and spreading lateral 



1884. Polypodium vulgare, 



var. Cambricum. 

 A crested or much -cut 

 form, from a specimen 

 found in New Hamp- 

 shire. (X^.) 



ones which are more or less auricled at the base. Ja- 

 pan and Corea. 



P. aureum. See Phlebodium. P. Dryopteris. See Phegop- 

 teris Dryopteris. P. glaucum. See Phymatodes. P. hexa- 

 gonopterum. See Phegopteris. P. Kerandreanum. See Phe- 

 gopteris. P. muscefblium. See Phymatodes. P. nigrescens. 

 See Phymatodes. P. Phegopteris. See Phegopteris Polypo- 

 dioides. P. Phymatodes. See Phymatodes. P. plumbsum is 

 a form of Asplenium filixfoamina. P. quercifblium. See Dry 

 naria. P. rigidulum. See Drynaria. P. Swdrtzii. See Phy- 

 matodes. L. M. UNDERWOOD. 



POLYPODY. See Polypodium. 



POLYPTERIS (Greek words meaning many -winged 

 or feathered; referring to the pappus). Compdsitw. 

 This includes a handsome, rosy-fld. hardy annual known 

 to the trade as Palafoxia Hookeriana. Polypteris is a 

 genus of 4 species of North American herbs: Ivs. mostly 

 entire, alternate or the lower opposite, and lax corym- 

 bosely panicled heads of fls. borne in summer and au- 

 tumn: involucre broadly bell-shaped or top-shaped; 

 bracts commonly in 2 series, more or less colored and 

 petal-like toward the tips: rays wanting except in P. 

 Hookeriana: akenes linear to club-shaped, 4-sided: 

 pappus of 6-12 equal scales. Distinguished from Pala- 

 foxia by the colored tips of the involucral bracts and the 

 deeply divided limb of the corolla. Monographed in 

 Gray's Synoptical Flora. 



Hookeriana, Gray (Palafdxia Hookeriana, Torr.). 

 Annual 1-4 ft. high: Ivs. lanceolate, mostly 3-nerved 

 below: heads 1 in. or more across; rays 8-10, deeply 

 3-cleft. Sandy plains, Neb. to Tex. B.M. 5549. Hand- 

 some plant; sometimes treated as an everlasting. 



POLYSCIAS (many and shade; referring to the 

 abundant foliage). Araliacece. Large shrubs or trees, 

 glabrous, of about 8 species of India, Africa and Malaya. 

 Lvs. pinnate, with thick entire leaflets: fls. small, 

 usually 5-merous (sometimes 4-merous), the calyx 

 truncate or toothed, the petals valvate, the ovary 5-8- 

 loculed, the styles usually of the same number and 

 distinct. Polyscias is allied to tropical Aralias and 

 Panax, and the culture is the same as for those plants. 

 For further botanical discussion, see Panax. 



paniculata, Baker (Termindlia tlegans, Hort.). 

 Erect, glabrous shrub: Ivs. pinnate, usually with 7 

 Ifts., of which the terminal one is 7-9 in. long, oblong 

 and obtuse, shining. Mauritius. This is another ex- 

 ample of the confusion which arises from the naming 

 of garden plants before their flowers or fruits are 

 known. For several years this plant was supposed to 

 be a Terminalia, but now it is known to belong to a 

 wholly different family. Another example is Aralia 

 Chabrieri of the gardens, which belongs to the Celas- 

 tracese (Elseodendron). 



pinnata, Forst. (Aralia latifdlia, Wight & Arn.). 

 Leaflets orbicular, either nearly entire or with small and 

 remote teeth, the base heart-shaped. Malaya. The 

 writer does not know that the Aralia latifolia of 

 gardeners is the above plant, as he has not seen it. 

 Aralia latifolia of the trade is described as "very bold 

 and rich in appearance; green and pale yellow leaves." 



L. H. B. 



POLYSTACHYA (Greek, referring to the many spike- 

 lets). Orchiddcece. About 40 species of tropical epiphy- 

 tic orchids, none of which have showy fls. P. luteola, a 

 native of the West Indies, has minute greenish yellow 

 fls. and has probably been cult, in America, but is not 

 worth while. Sepals connivent or subpafcent;, the lateral 

 ones connate with the short foot of the column into a 

 mentum: column short: flowering stems short, few- 

 leaved, pseudobulbous. See Orchid. 



luteola, Hook. (Dendrbbium polystachyon, Sw.). 

 Height 6-12 in.: Ivs. oblong-linear or lanceolate-oblong, 

 exceeded by the stem; lip 3-lobed to the middle. 



POLYSTICHUM (Greek, many rows; referring to the 

 sori). Polypodiacece. A genus of ferns mostly of tem- 

 perate regions with free veins and the roundish sori 

 covered by indusia that are peltate and attached to the 

 leaf by a short central stalk. They are mostly easily 

 grown and thrive best in shade. Some of the species do 



