POLYPODIUM 



POLYSCIAS 



2745 



8. Catharina, 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. 



DD. Pinnae narrowed and distinct at base. 



9. fraxinifdiium, 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. 



10. subauriculatum, Blume. Stalks 6-12 in. long, 

 glossy, from wide-creeping rootstocks: If .-blades 2-3 

 ft. or more long, 8-12 in. wide; 



sori in a single row immersed 

 in the leaf. India to Austral. 



AAA. Veins (primary) distinct 

 from midrib to the edge, 

 connected by parallel trans- 

 verse veinlets forming rows 

 of similar areoles. 



B. Lvs. elongate, simple, smooth 

 beneath. 



11. Phyllitidis, Linn. (Cam- 

 pyloneuron Phyllitidis, Presl). 

 Lvs. 1-3 ft. long, 1-4 in. wide, 

 with an acute point, and the 

 lower part narrowed gradu- 

 ally; areoles in rows of 6-12, 

 usually with 2 sori each. Fla. 

 to Brazil. This species might 

 more justly be placed in the 

 genus Campyloneuron. 



BB. Lvs. with under surface 

 tomentose. 



12. Lingua, Swart z. Lf.- 

 blades 4-8 in. long, 1-2 in. 

 wide, the apex often cuspidate, 

 the base narrowed or rounded; 

 upper surface naked, the lower 

 matted with reddish brown 



cottony scales, the sori in close rows of 4-6 each. 

 Japan to Ceylon. This species and the next are often 

 more properly listed in the genus Cyclophorus. There 

 are a few crested and other horticultural forms. 



13. tricuspe, Swartz. Lvs. hastate, 2-4 in. each way, 

 with a central lanceolate-triangular lobe and spreading 

 lateral ones which are more or less auricled at the 

 base. Japan and Korea. 



P. aureum=Phlebodium. P. Dry6pteris=Phegopteris Dryop- 

 teris. P. 0Zatccum=Phymatodes. P. hexagon opterum=Phegop- 

 teris. P. Kerandreanum=PhegopteTis. P. lepiddpterit, Langs. 

 <fe Fisch. (P. sepultum, Kaulf. Lepicystis sepulta) is a very scaly 

 pinnatifid form from Trop. Amer., of some interest for collectors. 

 P. mu.sa?/d/ium=Phymatodes. P. ni<?rec7i=Phymatodes. P. 

 PAe06pten>=Phegopteris polypodioides. P. Pkymatdde#=Phy- 

 matodes. P. plumdsum is a form of Asplenium FiUx-temina. P. 

 7uerci'/dJi'um=Drynaria. P. rtffduiuf7i=Drynaria. P. Swdrtzii 



L. M. UXDERWOOD. 



POLYPTERIS (Greek words meaning many-winged 

 or feathered; referring to the pappus). Composite. This 

 includes a handsome, rosy-flowered hardy annual 

 known to the trade as Palafoxia Hookeriana. 



Polypteris is a genus of 4 species of X. American 

 herbs: Ivs. mostly entire: alternate heads of peduncu- 

 late, rose-purple or flesh-colored fls. borne in summer 

 and autumn: involucre broadly bell-shaped or top- 

 shaped; bracts common!}' in 2 series, more or less col- 

 ored and petal-like toward the tips: rays wanting 

 except in P. Hookeriana: achenes linear to club-shaped. 

 4-sided; pappus of 6-12 equal scales. Distinguished 

 from Palafoxia by the colored tips of the involucral 

 bracts and the deeply divided limb of the corolla. 

 By some the genus is united with the older genus 

 Palafoxia, which is also American. 



3110. Polypodium vulgar e 

 var. cambricum. (XH) 



Hookeriana, Gray (Palafoxia Hookeriana, Torr. & 

 Gray). A stout annual 1-4 ft. high, sticky pubescent : Ivs. 

 lanceolate, mostly 3-nerved below: heads 1 in. or more 

 across; rays 8-10, deeply 3-cleft, rose-red, about J^in. 

 long and showy. Sandy plains, Neb. to Texas. B.M. 

 5549. Handsome plant; sometimes treated as an 

 everlasting. N . TAYLOR^ 



POLYRRHIZA (Greek, many roots). Orchidacese. 

 Epiphytes: sepals and petals spreading, labellum 3- 

 lobed, lateral lobes small, angular, middle one with 

 spreading lobes; spur long, filiform; column short; pol- 

 linia 2. The following are intro. into American horti- 

 culture: 



Linden!!, Rolfe (Dendrophylax Lindenii). Scape 

 leafless, bearing a single white fl.; sepals and petals 

 lanceolate; divisions of midlobe of labellum lanceolate: 

 caps, smooth. On Oreodoxa Regia, and live oaks, S. Fla. 



funilis, Pfitz. (Dendrophylax funalis, Hort. (Eco- 

 clades funalis, Lindl. Angraecum funole, Lindl.). Leaf- 

 less, roots numerous, fleshy: peduncles 2-fld.; fls. white; 

 sepals and petals oblong-lanceolate; labellum 3-lobed, 

 with a long horn. Mountains of Jamaica. 



OAKES AMES. 

 GEORGE V. NASH.f 



POLYSCIAS (many and shade; referring to the 

 abundant foliage). Araliacese. Large shrubs or trees, 

 glabrous, comprising the pinnate-leaved tender aralias 

 of greenhouses, grown for the ornamental foliage. 



Leaves pinnate, with variable Ifts., in many horti- 

 cultural forms much cut, modified and often varie- 

 gated: fls. very 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. About 70 species are 

 described, from India, Trop. Afr., and Pacific Isls., 

 some of which probably belong in other.genera. Recent 

 introductions from New Caledonia and other islands 

 have given interesting forms for the cultivator. In cult, 

 very rarely flowering; some specimens of P. fruticosa 

 known to be 15 years old or more have never blossomed. 

 From the temperate Aralia, comprising the Hercules' 

 club, the genus is easily told by its lack of spines and 

 also by the technical floral characters of little value to 

 horticulturists, as the tender sorts rarely flower. From 

 Panax, the ginseng, the genus is separated by its woody 

 habit. From Fatsia, the true Polyscias is distinguished 

 by having the pedicel usually articulated beneath the fl. 

 The genus Dizygotheca is distinguished by digitate Ivs. 

 of many Ifts., and 4-celled anthers and 10-celled ovary 



3111. Aralia Chabrieri of greenhouses, but 

 properly an EUeodendron. ( X J- 



(the allied genera have 2-celled anthers and mostly less 

 than 10-celled ovary). 



The glasshouse aralias are much confused botanically. 

 The genus Aralia as understood by the older botanists 

 turns out to be a polymorphous group, and in the 

 segregation of other genera it is often difficult properly 

 to redistribute the species. This is particularly true 



