BYTTNERIACEjE. XVI. WALTHEKIA. XVII. ALTHERIA. 



531 



of South America between Bordones and Cumana. Resembles 

 W. Americana. Perhaps W. angustifolia, Lin. spec. 941. ex- 

 clusive of the synonymes ? Flowers yellow. 

 Narrow-leaved Waltheria. Shrub 1 to 2 feet. 



6 W. CORCHORIFO'LIA (Pers. ench. 2. p. 216.) leaves oblong- 

 elliptic, tomentose on both surfaces ; heads of flowers axillary, 

 compact, on long peduncles ; calyx very villous ; corolla smooth. 



*j . S. Native of Rio Janeiro in Brazil. W. elliptica, St. Hil. 

 fl. bras. l.p. 152. Flowers yellow. 



Corchoms-leaved Waltheria. Shrub 2 feet? 



7 W. GLA'BRA (Poir. diet. 7. p. 325.) leaves ovate-lanceolate, 

 mucronately serrated, and are as well as the stem very smooth ; 

 heads of flowers ranged alternately on an axillary stalk ; calyxes 

 ciliated. Tj . S. Native of Guadaloupe. W. lae vis, Schrank. 

 pi. monac. t. 55. Link. enum. 2. p. 179. Petals yellow, linear. 



Smooth Waltheria. Fl. July. Clt. 1823. Shrub 3 feet. 



8 W. CORDA V TA (Smith in Rees' cyclop, vol. 37.) leaves 

 smooth, cordate, broad-ovate, even, acutely and unequally tooth- 

 ed ; heads of flowers solitary, axillary, on stiff" peduncles. Tj . 

 S. Native of the West Indies. Flowers yellow. 



Heart-leaved Waltheria. Shrub 3 feet. 



9 W. CINERA'SCENS (St. Hil. fl. bras. 1. p. 152.) stem shrubby, 

 naked ; leaves somewhat imbricated, somewhat ovate-orbicular, 

 very obtuse, cordate at the base, coarsely-serrated, tomentose 

 on both surfaces, cinereous ; heads of flowers terminal ; calyx 

 villous ; tube of stamens 5-cleft. Jj . S. Native of Brazil in 

 the province of Minas Novas. Flowers yellow. 



Cinereous Waltheria. Shrub 4 feet. 



10 W. MARI'TIMA (St. Hil. fl. bras. 1. p. 153.) stem suffru- 

 tescent, branched ; leaves rather imbricate, ovate, obtuse, deeply- 

 serrated ; pilose on both surfaces, and with fine glandular tuber- 

 cles ; heads of flowers terminal ; calyx acuminated, pilose ; tube 

 of stamens nearly entire. Tj . S. Native of Brazil near Meia- 

 hype, not far from Benevente. Flowers yellow. 



Sea-side Waltheria. Fl. Sept. Shrub 1 foot. 



11 W. LANA^TA (St. Hil. fl. bras. 1. p. 154.) stem suffruticose, 

 nearly simple ; leaves ovate, acutish, plaited, lower and middle 

 ones villous above, but villously-tomentose beneath, uppermost 

 ones woolly, hoary-glaucous ; heads of flowers terminal, rarely 

 as if they were axillary, covered with woolly tomentum ; tube 

 of stamens entire, fj . S. Native of Brazil in the province of 

 Minas Geraes. Flowers yellow. 



Woolly Waltheria. Fl. Oct. Shrub 1 foot. 



12 W. LOPHA'NTHUS (Forst. prod. no. 252.) leaves roundish, 

 cordate, serrated, stalked, clothed with silky down ; heads of 

 flowers stalked, with imbricate bracteas. J? . S. Native of 

 the Marquis Islands in the South Seas. Lophanthus tomentosus, 

 Forst. car. gen. 14. Flowers probably yellow. 



Crest-flowered Waltheria. Shrub 3 feet ? 



13 W. ERIOCA'RPA (D. C. prod. 1. p. 493.) leaves oval, plait- 

 ed, toothed, tomentose; stipulas bristly-ciliated, permanent; 

 heads of flowers on short peduncles ; branches, petioles, and 

 peduncles clothed with down. Tj . S. Native of Brazil. Flowers 

 yellow. 



Hairy-fruited Waltheria. Shrub. 



14 W. OVATA (Cav. diss. 6. p. 317. t. 171. f. 2.) leaves 

 roundish-ovate, unequally toothed, tomentose ; heads of flowers 

 sessile, leafy. Tj . S. Native of Peru. Flowers yellow. 

 Stipulas linear, deciduous. 



Ocate-leaved Waltheria. Shrub 4 feet. 



15 W. ELLI'PTICA (Cav. diss. 6. p. 316. t. 171. f. 2.) leaves 

 oblong, obtuse, toothed, tomentose ; heads of flowers axillary, 

 compact, glomerate ; calyx very villous ; corolla smooth, fj . S. 

 Native of the East Indies. Flowers yellow. Stipulas lanceo- 

 late, deciduous. 



Elliptical-leaved. Waltheria. Fl.July. Clt. 1812. Shrub 3 ft. 



16 W. DURANDI'NHA (St. Hil. fl. bras. 1. p. 153. pi. usu. 

 bras. no. 34.) stem suffruticose, ascending; leaves ovate or 

 ovate-orbicular, obtuse, cordate at the base, lower ones pilose, 

 upper ones tomentose and glaucous ; heads of flowers terminal, 

 and few axillary ; calyx pubescent ; petals bearded above the 

 claw ; tube of stamens entire. Jj . S. Native of Brazil on the 

 banks of the river Uruguay, where it is called Durandinha. 

 The inhabitants use it with success in diseases of the chest, and 

 in decoction as an antisiphilitic, at least to allay the inflammation 

 commonly attending that disease. It is also used to cure wounds. 

 Flowers yellow. 



Durandinha Waltheria. Fl. Dec. Feb. Shrub 1| foot. 



17 W. GRA V CILIS (St. Hil. fl. bras. 1. p. 154.) stem simple, 

 suffruticose at the base ; leaves ovate, or ovate-elliptic, obtuse, 

 plaited, lower ones pilose, upper ones tomentose and canescent ; 

 heads of flowers terminal, few, axillary ; tube of stamens nearly 

 entire. Tj . S. Native of Brazil. Flowers yellow. 



Slender Waltheria. FL Oct. Shrub i to 1-| foot. 



18 W. GLABRIU'SCCLA (St. Hil. fl. bras. 1. p. 153.) stem suf- 

 fruticose at the base, nearly simple ; leaves elliptic or roundish, 

 obtuse, smoothish ; heads of flowers terminal and very few, 

 axillary ; calyx villous ; tube of stamens 5-cleft. Tj . S. Na- 

 tive of Brazil. Flowers yellow. 



Smoothish Waltheria. Fl. April. Shrub -| foot. 



19 W. COMMU'NIS (St. Hil. fl. bras. 1. p. 155.) stem shrubby 

 at the base, nearly simple, hairy ; leaves ovate-oblong or rarely 

 ovate, obtuse, somewhat cordate at the base ; pilose on both 

 surfaces, ciliated ; heads of flowers hairy-tomentose, terminal ; 

 tube of stamens very short, 5-cleft. t? . S. Native of Brazil 

 in the province of Minas Geraes. Flowers yellow. 



Common Waltheria. Shrub -| foot. 



20 W. MICROPHY'LLA (Cav. diss. 6. p. 317. 1. 170. f. 2.) leaves 

 oblong, obtuse, plaited, serrulated, hoary, tomentose ; heads of 

 flowers sessile. Tj. S. Native of the East Indies. Pluk. 

 aim. t. 150. f. 5. The whole plant is covered with fine tomen- 

 tum. Leaves small. Flowers yellow. 



Small-leaved Waltheria. Fl. June, Jul. Clt. 1824. Sh. 4ft. 



21 W. LONGIFOLIA (D. C. prod. 1. p. 493.) leaves oblong, 

 acutish, toothed, pubescent beneath ; heads of flowers sessile, and 

 disposed on the branches as if they were in interrupted spikes. 

 J; . S. Native of the Caribbee Islands. Flowers yellow. 



Long-leaved Waltheria. Shrub 4 feet. 



22 W. A'STROPUS (Spreng. syst. 3. p. 31.) leaves ovate, nearly 

 sessile, deeply toothed, obtuse, rough from stellate down ; heads 

 of flowers corymbose, terminal. Jj . S. Native of Brazil. 

 A'stropus tomentosus, Spreng. Neu. endt. 



Starry Waltheria. Shrub 2 to 4 feet. 



Cult. This is a genus of unimportant shrubs, not worth cul- 

 tivating except in general collections. The species will thrive 

 well in a rich loamy soil, or a mixture of loam and peat, and 

 cuttings will root readily in sand, under a hand-glass, in heat. 



XVII. ALTHERIA (a name abridged from Waltheria). 

 Pet. Th. nov. gen. mad. no. 64. D. C. prod. 1. p. 493. 



LIN. SYST. Monadelphia, Pentandria. Calyx 5-cleft, 

 girded by a 3-leaved involucel. Petals 5. Stamens 5, joined 

 into a tube ; anthers bursting on the outside. Ovary 5-sided. 

 Styles 5, joined. Carpels 5, joined, 1-seeded. Seeds fixed to 

 the central placenta. 



1 A. MADAGASCARIE'NSIS (D. C. prod. 1. p. 493.). fj . S. 

 Native of Madagascar. Visenia Madagascariensis, Spreng. An 

 erect, hairy herb, with cordate serrated leaves, and small, axil- 

 lary, yellow flowers, which are disposed in bundles. 



Madagascar Altheria. Shrub 2 feet. 



Cult. This plant will thrive well in a mixture of loam, peat, 

 3 Y 2 



