HEUCHERA 



HIBISCUS 



741 



C. B.B. 2: 179. "Evergreen foliage marbled 

 with bronzy red." Woolson. 



DD. Calyx prominently oblique. 

 hispida, Pursh. Height 2-4 ft. Woods, Va. 

 to Idaho. B.B. 2:180. 



cc. Inflorescence a spike. 

 cylindrica, Dougl. Height 10-24 

 in. Yellowstone Park westward. 

 B.R.23:1924. 



BB. Scapes not hairy. 

 c. Inflorescence a loose panicle. 

 parvifdlia, Nutt. Height %-2 ft. New 

 Mex. to Mont. 



cc. Inflorescence denser, spicate. 

 bracteata, Ser. Height 3-6 in. Colo. 



AA. Stamens and styles much exserted, 



at least at first. 

 B. Length of calyx 3-5 lines. 



rubescens, Torr. Height 8-15 in.: 

 scape usually leafless, glabrous or some- 

 what scabrous: margin of Ivs. ciliate. 

 New Mex. to Nev. 



BB. Length of calyx l%-3 lines. 



Americana, Linn. ALUM ROOT. Height 

 2-3 ft. : scape leafless or with a few small 

 Ivs., more or less glandular-hirsute. Dry 

 or rockv woods, Out. to La. and Minn. 

 B.B. 2:179. R. H. 1898, p. 431. -"Has 

 mottled foliage." Gillett. 



BBB. Length of calyx 1-1% lines. 



C. Scape vinous, i. e., densely covered 



with long, soft hairs. 



villdsa, Michx. Height 

 1-3 ft.; scape mostly 

 leafless. Rocky places, 

 Va. to Ga. and Tenn. 

 B.B. 2:179. 



cc. Scape thinly covered with minute 

 glandular hairs. 



micrantha, Dougl. Height 1-2 ft. Calif. 

 B.R. 15:1302. R.H. 1898, p. 431. 



Tne following names are seen in trade cat- 

 alogues but not in Index Kewensis. H. pur- 

 purdscens was advertised 1898, by H. Corre- 

 von, Geneva, Switzerland. Plants in Ameri- 

 can trade are not yet large enough for identi- 

 fication. H. Wheeleri was found in the South 

 some years ago, and Thomas Meehan, who 

 has not examined it closely, says it looks like 

 a form of H. Canadensis with variegated Ivs. 



W. M. 



HEVEA (from the Brazilian name). 

 JL'uphorbiacece. This includes the tree 

 that produces the Para rubber of com- 

 merce. The genus contains 11 species 

 of tall trees from Brazil and Guiana, 

 furnishing the milky juice called caout- 

 chouc: Ivs. alternate, long-stalked, the 

 3 leaflets entire, feather-veined, mem- 

 branous or leathery: fls. small, monoe- 

 cious. Important generic characters are 

 the 3 leaflets, loose panicles, 5-toothed 

 or 5-lobed calyx, and 5-10 stamens, the 

 filaments united in a column under the 

 rudimentary ovary. The nearest ally of 

 garden value is Jatropha, in which the 

 fls. have petals, while Hevea belongs to 

 a group in which the petals are lacking. 

 This plant may possibly be cult, under 

 glass for its economic interest in a few 

 botanical collections. It was once adver- 

 tised by Reasoner Bros., Oneco, Fla. 

 The common "rubber plant," extensively 

 cult. North as a house plant, is the East 

 India Rubber Plant, Ficus elastica. 



Brasiliensis, Muell. Arg. SOUTH AMER- 

 ICAN RUBBER TREE. Height 60 ft. : Ifts. 

 membranous: staminate fls. with buds 

 narrowly ovoid-conical and disc small, 



urn-shaped, many-lobed, tomentose ; an- 

 thers 10, in 2 whorls : floral Ifts. 2-3 in. 

 long, elliptic-lanceolate. Brazil. 



HEXlSEA (Greek, six equal things; 

 because the attractive and bright colored 

 parts of the flower are 6, and of equal 

 size). Orchidacece. Should have been 

 written Hexisia. This includes a small 

 epiphytic plant which John Saul once 

 advertised as "bearing profuse panicles 

 of bright vermilion flowers twice a year." 

 The genus belongs to a subtribe closely 

 related to Epidendrum but with different 

 pollinia. Stems terete or angled, with 

 usually 2 Ivs. at the apex of each annual 

 growth. New growths arise in the axils 

 of the Ivs., the entire stem being thus 

 made up of long, fusiform, apparently 

 superimposed pseudobulbs, with 2 Ivs. 

 at each node. Lvs. few, narrow : ra- 

 cemes terminal, the short-peduncled fur- 

 nished with overlapping, leathery scales : 

 fls. orange or purple; anthers semi-glo- 

 bose ; pollinia 4, in 1 series. 

 Four species, ranging from 

 Mexico to Guiana. 



bidentata, Liudl. Height 6-8 

 in. : stem branched, forming 

 spindle-shaped, many-grooved inter- 

 nodes: Ivs. in pairs, 2-4 in. long, 

 3 lines wide, channelled, notched. 

 Panama. B.M. 7031. G.M. 37:19. 

 H. HASSELBRING. 



HIBISCUS (old Latin name). Mal- 

 vaceae. MARSH MALLOW. ROSE MAL- 

 LOW. A polymorphous genus, allied 

 to Gossypium, Abutilon, Althaea and 

 Malva, the species widely distributed 

 in temperate and tropical countries. 

 Herbs or shrubs, or even trees, with 

 Ivs. palmately veined or parted. 

 Parts of the fl. in 5's; calyx gamo- 

 sepalous, 5-toothed or 5-cleft, sub- 

 tended by an involucel of narrow 

 bracts; corolla usually campanulate, 

 showy, of 5 distinct petals; stamens 

 united into a 5-toothed column : ovary 

 5-loculed, bearing 5 styles : fr. a dry, 

 more or less dehiscent capsule. Be- 

 tween 150 and 200 species. Horticul- 

 turally, there are four general groups 

 of Hibiscus the annuals, the per- 

 ennial border herbs, the hardy 

 shrubs, and the glasshouse shrubs. 

 The culture and treatment vary with 

 these groups. 



INDEX. 



aculeatus, 6. lasiocarpus, 11. 



Africanus, 1. Leopoldii, 13. 



anemonceflorus, 13. luteus, 21. 



1054. Hibiscus vesicarius 

 H. Africanus of gardens. 



(XH.) 



