2534 



PELARGONIUM 



PELLvEA 



2851, has Ivs. twice the size of the type, and is a 



worthy plant. 



31. Limdneum, Sweet. LEMON GERANIUM. Lvs. 



larger than in the last, not 2-ranked, soft: fls. purple 



and lilac. A garden hybrid, P. crispum probably being 

 one of its parents. There is a 

 form with variegated Ivs. 

 Sometimes known to garden- 

 ers as P. odoratum. It is a neat 

 and worthy plant, and showy 

 when in flower. It has a 

 lemon or balm scent. The 

 variety known as Lady Mary 

 is of this group. 



2850. Pelargonium crispum 

 var. latifolium. ( X H) 



2851. Pelargonium 

 crispum var. latifolium. 

 A lower leaf. (X 1 A) 



Any number of Latin-formed names of Pelargonium may appear 

 in the trade, for the hybrids and varieties are numerous and not 

 always readily referable to the species as forms or varieties. P. 

 Blandfordianum, Sweet (P. graveolens X P. echinatum). A good 

 grower, shrubby, the branches roughish pubescent: Ivs. flat, 7- 

 lobed, the lower lobes deeply lobed again, all bluntly toothed, 

 strong-scented: fls. white or pale blush, the upper petals with 

 2 red spots. G.M. 54:626. P. brevipetalum, N. E. Br.=P. 

 polycephalum. P. Cotyled6nis, L'Her. Lvs. evergreen, at base of 

 plant, cordate, 3 in. across, entire or nearly so, whitish beneath, 

 wrinkled above: fls. on scape-like peduncles above the Ivs., Jin. 

 across, white. St. Helena. Requires little heat. G. 35:235. P. 

 insequilobum, Mast. Allied to P. multibracteatum. Pilose: Ivs. 

 3-lobed, the terminal lobe ovate-lanceolate and again lobed in 

 middle, margins toothed: fls. greenish yellow with purple in base. 

 Trop. Afr. Perhaps same as P. Fischeri, Engl. P. luteolum, N. E. 

 Br. A very recent species from S. Afr.: herb with bulbous root- 

 stock: Ivs. 4 or 5, all radical, twice ternately divided, Yr^A in. 

 long and broad, the ultimate segms. linear: petals nearly Hin. long, 

 pale yellow with 2 red lines at base. P. polycephalum, E. Mey. 

 (P. brevipetalum, N. E. Br.). St. thick and fleshy, ovoid, rising 

 very little above the ground, short-branched at top : Ivs. in a rosette, 

 bipinnately divided, ovate-oblong in outline, thick and fleshy; 

 pinnae 5 or 6 pairs, pinnatisect: fls. pale yellow, the petals shorter 

 than sepals. Cape Colony. P. rdseum, Hort., is a name of no 

 botanical standing, applied to some of the common forms of rose 

 geranium of the P. Radula group. L H B 



PELEC^PHORA (Greek, hatchet-bearing; from an 

 alleged resemblance in the tubercles). Cactacese. 

 HATCHET CACTUS. Two species closely allied to 

 Mammillaria; sometimes seen in cactus collections. 



Stems globular, short-cylindric or clavate, small, 

 often cespitose : tubercles strongly compressed from the 

 sides; areoles very long and narrow, bordered on each 

 side by a row of about 20 very short, appressed comb- 

 like spines: fr. naked. 



aselliformis, Ehrb. (from a fancied resemblance to 

 Asellus, the wood-louse). Juice watery: tubercles ashy 

 green, more or less deeply grooved to the woolly axil; 

 spines not projecting beyond the margin of areole: fls. 



purple with paler sepals : fr. near the center, red. Nuevo 

 Leon and San Luis Potosi, Mex. I.H. 5:186. Var. 

 concolor has pure purple fls. B.M. 6061. 



pectinate, Schum. Juice milky: tubercles bright green 

 with naked axils; spines projecting a little beyond the 

 margin of tubercle: fls. yellow, lateral. Oaxaca, Mex. 

 KATHARINE BRANDEGEE. 



PELIOSANTHES (Greek, livid flowers, referring to 

 the flowers of certain species). Liliacese. Plants with 

 short horizontal rhizomes, long-petioled radical Ivs. 

 and fls. borne in spikes or simple racemes: perianth- 

 tube above the ovary, short, broad, campanulate; limb 

 spreading-rotate with 6 subequal, broad, obtuse lobes; 

 stamens 6 with very short filaments; ovary inferior, 3- 

 celled; stigma 3-lobed; cells with 2 ovules erect from 

 the base, anatropous; seeds oblong or globose, fleshy. 

 About 12 species from India, the E. Indies, and Ma- 

 layan Peninsula. The following have occasionally 

 appeared in cult: P. Teta, Andr. Lvs. 2-7; petiole varia- 

 ble in length: scape naked or with a few scales above 

 and large membranous sheaths at the base; raceme 6- 

 12 in.; bracts 1-3 to every fascicle of fls., pedicels 

 short; fls. J^-J^in. diam., purplish or bluish green: 

 seeds as large as a pea, olive-blue. Himalaya, Malaya. 

 B.M. 1302. The var. Mantegazziana, Pampanini, is a 

 form with less rigid Ivs. than the type. Malaya. P. 

 violacea, Wall., has the habit of P. Teta and fls. of the 

 same size and color but solitary in the bracts: seeds 

 %in. long, oblong. Himalaya, Burma. Var. Cldrkei, 

 Baker, differs from the type in having more conspicu- 

 ous transverse nervules and a darker purple fl. Assam 

 and Malaya. B.M. 8276. Cult, in botanic gardens in 

 the tropical house. F. TRACY HUBBARD. 



PELLflJA (Greek, pellos, dusky; from the usually 

 dark-colored leaf -stalks) . Polypodiacese. Small rock- 

 loving ferns thriving best on limestone rocks. 



Sori at the ends of free veins forming a mostly con- 

 tinuous marginal band around the segms. and covered 

 by the more or less changed margin of the segms. The 

 species are perhaps 40 or more, widely scattered in 

 many countries. Some of them are glasshouse subjects 

 and others are hardy. 



A. Lvs. simply pinnate. 



B. Lfts. 4~5 pairs. 



Pringlei, Dav. Lvs. with 4-5 pairs of large triangular 

 hastate stalked Ifts. 1 in. or more across either way: 

 sorus forming a wide marginal band. Mex. 



BB. Lfts. 5-8 pairs. 



Bridgesii, Hook. (Platyldma Bridgesii, J. Smith). 

 Lfts. subsessile, orbicular or subcordate, 4-5 lines long: 

 sori confluent in a broad intramarginal band. Calif. 



BBB. Lfts. 20-40. 



rotundifdlia, Hook. Fig. 2852. Lfts. mostly short- 

 stalked, oblong or roundish, entire, obtuse. New Zeal. 



falcata, Fee (Platyldma falcatum, J. Smith). Lfts. 

 nearly sessile, lanceolate or lanceolate-oblong, mucro- 

 nate and often slightly falcate : sori in broad lines. India 

 to Austral, and New Zeal. 



2852. Pellaa rotundifolia. 



