524 



BYTTNERIACEjE. V. COMMERSONIA. VI. BYTTNERIA. 



with stellate hairs. Flowers larger than those of the C. dspera 

 species, yellowish ? 



Jack's Commersonia. Fl. Sept. Shrub cl. 



6 C. PLATYPHY LLA (Andr. hot. rep. no. 603. t. 519. under 

 C. echinata,) hairy ; stem shrubby ; leaves broad, ovate, acu- 

 minated, unequally toothed, obliquely cordate, hairy on both 

 surfaces. ^ . S. Native of the Molucca Islands. Sims, bot. 

 mag. t. 519. Flowers white, in axillary panicles. 



Var. (3, Leschendultii (D. C. prod. 1 . p. 486.). M. de Can- 

 dolle has a specimen from the botanic garden of Calcutta which 

 is very like C. platyphylla, but the leaves are equally serrate, 

 smooth above ; the panicles are axillary and leafy, and the 

 floriferous branches opposite the leaves. Perhaps a proper 

 species ? 



Broad-leaved Commersonia. Fl. Ju. Jul. Clt. 1806. Sh. 4ft. 



7 C. pii.6sA (Roxb. fl. ind. 2. p. 381. under Buttneria) leaves 

 with from 3-5 acute angles, toothed, 7-nerved, with a large long 

 gland on the middle one near the base ; umbels of flowers axil- 

 lary, proliferous ; mucrones of petals filiform ; stem twining, 

 f? . w . S. Native of Chittagong in the East Indies. Petals 

 yellow on the outside and red within, of a bright orange-colour 

 at the top. Younger branches hairy. This climbs to a great 

 extent. 



Hairy-branched Commersonia. Fl. Sept. Shrub cl. 



8 C. GAUDICHAU'DI (Gay. in litt. D. C. prod. 1. p. 486.) 

 stem shrubby ; leaves profoundly cordate, unequal-sided ; his- 

 pid above, tomentose beneath. Tj . G. Native of New Holland 

 on the eastern coast. Flowers probably white. 



Gaudichaud's Commersonia. Shrub 3 feet. 



9 C. FRASE'RI (Gay, ex Spreng. syst. 1. p. 954.) leaves 

 ovate-oblong, serrated, tomentose beneath ; cymes opposite the 

 leaves ; sterile filaments elongated, petal-like, spatulate. Jj . G. 

 Native of New Holland. 



Fraser's Commersonia. Shrub 3 to 4 feet. 



Cvlt. These shrubs will grow well in a mixture of loam and 

 peat, and ripened cuttings will root readily in sand under a 

 hand-glass, those of the first seven in heat. 



VI. BYTTNE'RIA (in honour of David Sigismund Augus- 

 tus Byttner, once a professor of botany in the University of 

 Gottingen; who published in 1750 a catalogue of the plants in 

 the garden of an amateur named Cunon). Loefl. itin. 313. Lin. 

 gen. no. 268. but not of Duhamel. D. C. prod. 1. p. 486. 



LIN. SYST. Monadelphia, Decdndria. Calyx 5-cleft. Petals 

 5, unguiculate, concave at the base, drawn into a ligula between 

 the lobes of the concave part, which is variously divided. Tube 

 of stamens urceolate, variously divided, with 5 sterile segments 

 and 5 alternate, fertile ones opposite the petals, bearing twin or 

 subglobose anthers. Style short, smooth, crowned by 5 stigmas. 

 Capsule subglobose 5-lobed, echinated ; carpels 1-seeded from 

 abortion. Albumen wanting. Cotyledons convolute. Erect 

 or scandent shrubs. Leaves simple. Umbels simple, disposed 

 in something like racemes or panicles, rarely in corymbs. 

 Flowers small, usually dark purple. Calyx and corolla valvate. 

 This genus differs from Commersonia in the ligula of the petals 

 being inserted on the back of the cucullate part of the petals, 

 not gradually ending in a ligula as in that genus. 



1. Unarmed species, native of New Holland (allied to Com- 

 mersonia'). Rulingia, R. Brown. These plants perhaps agree 

 better with Commersonia than with Bytlneria. This section is no 

 doubt a distinct genus. 



1 B. DASYPHY'LLA (Gay, in litt. D. C. prod. 1. p. 486,) leaves 

 ovate-lanceolate, unequally serrated, hairy on both surfaces ; 

 mucrones of petals exceeding the calyx. T; . G. Native of 



Van Diemen's Land. Commersonia diphylla, Andr. bot. rep. 

 t. 603. Flowers white, in terminal corymbs. 



Thick-leaved Byttneria. Fl. June, Jul. Clt. 1780. Sh. 4 ft. 



2 B. PANNOSA (D. C. prod. 1. p. 486.) leaves ovate-lanceo- 

 late, unequally serrate-toothed, pubescent above, hairy beneath ; 

 mucrones of petals shorter than the segments of the calyx, 

 tj . G. Native of New Holland. Rulingia pannosa, R. Br. 

 in bot. mag. t. 2191. Byttneria inodora, Gay. ined. Lasiop6- 

 talum tomentosum, Cels. B. australis, Sieb. Flowers white from 

 tomentum, in axillary panicles. 



C/oiA-leaved Byttneria. Fl. Ju. Jul. Clt. 1800. Sh. 3 ft? 



3 B. HERMANNLEFOLIA (Gay, in litt. D. C. prod. 1. p. 486.) 

 leaves ovate, unequally crenate-toothed> tomentose beneath ; mu- 

 crones of petals shorter than the segments of the calyx. lj . G. 

 Native of New Holland about Port Jackson. Flowers white. 



Hermannia-leaved Byttneria. Fl. June, Jul. Clt. 1823. Sh. 



2. Unarmed species, natives of America, and one from the 

 Mauritius. 



4 B. MACROPHY'LLA (H. B. et Kunth, nov. gen. amer. 5. p. 

 315.) leaves cordate, ovate-roundish, obtuse, serrate-crenate, 

 marked at the base with a clear spot, and are as well as branches 

 pubescent ; peduncles many-flowered, axillary, usually in threes. 

 T/.S. Native of New Granada near Honda. Points of petals 

 dark-purple. 



Long-leaved Byttneria. PI. 1 to 2 feet. 



5 B. MELASTOMOIDES (St. Hil. fl. bras. 1. p. 144. t. 28.) 

 stem suffruticose, nearly simple ; leaves "ovate, quite entire, 

 smooth, upper ones lanceolate ; panicle terminal, elongated, 

 nearly simple ; tube of stamens 5-lobed ; lobes very obtuse, 3- 

 crenate, sterile ; anthers sessile beneath the lobes. Ij . S. 

 Native of Brazil. Racemes compound, involucrated, disposed in 

 umbel -like fascicles along the rachis. 



Melastoma-like Byttneria. Fl. July. Shrub 2 feet. 



6 B. GAYA'NA (St. Hil. fl. bras. 1. p. 145.) stem shrubby, 

 scandent, unarmed ; leaves oblong, or oblong-lanceolate, long- 

 acuminated, quite entire, smoothish ; peduncles axillary, umbel- 

 liferous ; tube of stamens 5-cleft, with the antheriferous divisions 

 a little below. Tj . ,_,. S. Native of Brazil in the province of 

 St. Paul. Petals dark-purple, ending in yellow points. 



Gay's Byttneria. Fl. March. Shrub climbing. 



7 B. SID^EFOLIA (St. Hil. fl. bras. 1. p. 146.) stem suffruticose, 

 climbing, unarmed ; leaves heart-shaped, acuminated, very acute, 

 quite entire; corymbs sublateral ; tube of stamens 10-cleft, 5 

 sterile divisions broadest, antheriferous, 5, very short and nar- 

 row. 1? . w . S. Native of Brazil on the banks of the river 

 Parahyba near Uba. Petals smooth, white. 



Sida leaved Byttneria. Fl. Feb. Shrub cl. or tw. 



8 B. BRASILIE'NSIS (Spreng. syst. 1. p. 790.) leaves subcor- 

 date-oblong, acuminated, triple-nerved, serrated, floccosely-to- 

 mentose ; peduncles axillary, subracemose ; branches terete, 

 tomentose. Jj . S. Native of Brazil. 



Brazilian Byttneria. Shrub. 



9 B. CATALP^FOLIA (Jacq. hort. schoenbr. 1. t. 46.) leaves 

 cordate, quite entire, smooth, acuminate ; stem climbing, tj . w . S. 

 Native of Caraccas. Flowers white. Peduncles solitary or 

 tern, axillary, panicled. 



Calalpa-leaved Byttneria. Clt. 1823. Shrub cl. 



10 B. HETEROPHY'LLA (Hook, bot. misc. pt. 3. p. 287. t. 61.) 

 climbing ; leaves cordate, with a short acumen, entire, lohed, 

 or palmate ; petals with a tooth on each side of the saccate 

 part. ^ . w . S. Native of the Mauritius, and Madagascar. 

 Telfairia volubilis, Newm. mss. Heterophyllum ramosum, Bojer. 

 mss. Panicles axillary. Leaves pubescent in the axils of the 

 veins. Calyx scarlet. Petals yellow, but reddish on the back, 

 ending in a long, linear, ciliated point. 



