1090 OXXII. ACANTHACE^, [Acanthe(B. 



undulato-dentata, deniibus spinosissimis. Flores ad axillas bractearum oppositarum 

 seasilos, densissime spicati, spicis intor folia ultima v, radicalia sessilibua ; bracteie 

 incisie et spinoso-dentatiej cc-fuviam imbricatce. 



Species 2, Afric^e aiistralis incolas. Nees in DC. Prod, xi, 278. >*iT ' ' 



44. Acanthus, Linn, Gen. n. 793, — Calyx 4-xmiiitiis, seginentis 2 exterioiibiis amplis 

 venosis v, basi cartilagineis, postico S-S-nervi integrOj antico 2-4-nervi integro v, 2-dentato, 



2 lateralibws interioiibua multo iViinoribus. Corollte tubus brevia, subcainpanulatus, s^pe 

 cai'tilaginens ; limbus postice a basi fissus, antice in labium amplum obovatum jjlanum late 

 3-5-lobum exj^ausus, loins festivatione inflcxisij intehucdio extimOj 2 posticis ad margines 

 labii parum prominentibus v* obsoletis. Stamina 4, fauci aflixaj labio bi^eviora^ filamentis 

 crassiusculis ngidis aplce leviter inciu^vis v. rectis ; anthers conniventeSj oblonga;^ in 

 longitudinem barbati>^, 1-loculares, prope basin dorsifixa?- Discua obsoletus. Stylus 

 apice acutiusculiiSj brevissime 2-fidu3 ; ovula in quoque loculo 2. Capsula ovoidea v* 

 oblonga, coriacea, nilidaj basi baud contracta, septo parallele sfepe compressa sed crassis- 

 siina fere 4-gona. Seuiina 4 v, abortu pauciura, plana, kevia v- brevitei; papilloso-muii- 

 cata ; embryo normalise — Herbie elatse carduacejie v. fruticcs. Folia radicalia v. opposita, 

 interdum maxima, sinnato-dentata v. pinnatifida, dentibus spinosis, v. rariiis subinteger- 

 rima. Flores albi v. Cierulei, ad axillas Lractearum oppositarum v. alternarum solitarii 

 seBsilesquOj in spicas tenninalos den5ias v. inten-uptas dispositi, Bractepo nunc ampbo 

 imbricatee spinoso-dentatee, nunc niinores integenimee v, rarins obsoletse ; bracteolio 

 angustfOj integerrimse v. spinoso-dentatee. 



Kpecios ad 14, regionum tropicarnm ct subtropicarum orbis veteris iiicolie, pluriinse Afrieanro, 2 

 Europae australis cives, Kees in DC. Prod, xi, 270. Wal^, Ann. iiL 223. T. Anders, in Joimt, 

 Linn. Sac. vii. 36, ix, 500. Nees, Oen. Ft. Germ. JRehhh, Ic. FL Gt^n, L 1811 ad 1815. 5^^-^/*. 

 FL Gr. t. 610, 611. TcUK As, Min. t. 20. Grif. Ic, PI Inch Or, t 427. Sot Mag, t 1808. 



Genus ab auctoribus nonnuUis in tria dividitur, sed duce Andersonio in iutegrum rostitutum 

 naturalc est et facile limitatum. 



Acanthi typiei species sunt 6, ineksis Europseis, hcrbie SLcpe elatte, foliia pmnatifidis spinoso- 

 dcntatis, bracteis ampHs spiuoso-dcntatis^ coroUse labio ob lobos posticos obscures s^pius 3-lobo. 

 A. Dioscoridis, Linn,, ab his differt foliis oblongis v. lanceoiatis integerrimis v, dcnticulatia, braetcis 

 t-xmen ut in typicis amplis spinoso-dentatis. In A. leiicosfacff^de, WalL, folia ^. Dioscoridis, bractea; 

 mi n ores, subspinoso-ciliatEe. 



Cheu-opsis, Moq. in Ann. So, Isat, ser, 1, xxvii. 230, Nees in DC. Prod, xb 272, species continet 



3 AfricFG ti-opicee, qiiacum 2 herbacese elate, tertia fniticosa, iuflorescentia et bracteis Acanthonun 

 typicorum, corollse labio distiiictiua 5-lobo. Oliv. in Trans. Linn, Sac, xxix. U 86> Dot, Mag, 

 i. 5516. 



- DiLrvARTA, Jttss. Gen. 103, Nees in DC. Prod, xi. 268, species eontinet 3, Africse, Asifie et 

 Australlce incolas, bracteia niinoribus intcgerrirais v. rarius obsoletis. A, {DiUvana) ilic{fcliU3 

 frutex est erectus foliis spinoso-lobatis et sfepe basi aculeis 2 stipuliformibiis auctis. In A, volubili, 

 Wall., et A, Kir&ii, T. Anders,, caulis subvolubilis- foliis integerrimis. Fahly Sym^j, t 40. Wight, 

 Ic, t 450 (Dilivaria), Wall, VL As, Ear, t, 172. 



4 - 



45. SclerocWton, Tlar^, in Hook, Land, Joxirn. i. 27 ; Thes, Cap, t, 145. — Calyx 

 5-partitus, segmcntia rigidis postico majore sed parum inrequalibus, Corollie tubus bre- 

 vissimus ; limbus postice a basi fissuSj antice in labium planum obovatum 5-lobum 

 expansus, lobis a;stivatioaie inflexis antico extimo. Stamina 4, didynama, fauci affixa^ 

 labio breviora, filamentis rigidulis ; antheriB ovato-triangulares^ 1-Ioculaies^ biisi breviter 

 barbellatfie v. glabrae, mutioB v. antice breviter mucronatie, dorso filamento adnata. 

 Discus inconspicuus. Stylus apice tenuis, brevissime 2-fidus ; ovula in quoque loculo 

 2. Capsula oblonga, dura, vix compressa, basi vix contracta, Semina 4 v. abortu 

 pauciora, plano-comprcssa, retinaculisbrevibus fulta ; embryo nonualis.—Fruticesglabri. 

 Folia opposita, integerrima. Flores pallide violacei v. albi, in summia axillis solitarii v. 

 ad apices ramorum pauci, sessilcs. Bractece et bracteolae integerrimse calyce breviorea. 



