218 COMPOSITAE. 



WOLLASTO.MA. 



venae iiiferiorcs opp., scquonies ^ipproxinininc 3—4, im ui ncglecln parc Inflma , f. 

 3—4 pliiiei via dici possini. Pili pag. superioris foliorum ciiam e tubcrculo , tamen 

 niullo niinore quam in spccio pracceilcntc, oriuntur. — Caulis ap. trichotomus, cact. 

 Ad VV. nioniannm DC, e licscr. appropiiiqualur scd involucruni biscrialo el ach. an- 

 {fulala divcrsam speciem esse demonstrant. — Javo, Zoiling. n. 2922. 



2506. ]IE:L.10PSIS Pers. 

 (DC. Prodr. V. 550, cxcl. scct. 3. — Walp. Rep. II. 610.) 



1. HELIOPSIS PARYIFOLIA Gray. — Pl. Wright. IL in Smithson. Contrib. V. p. 86. 

 Scabrella ; caiile gracili; f. lanc. v. suLhastatis b. pauciclenlatis (polli- 

 carib.); ped. elong. sub capiluio arnpliatis; invol. brevissimi sq. oblongis 

 oblusis; ligul. persistenlib. ; ach. papiliosis, disci prismaticis areola 

 acute quadrala. 



Sonora, inler Barbocomori et Santa Cruz. — Scpt. — Caules 12—18 pollic. eic. 

 2. HELIOPSIS CANESCENS H. B. K.? (DC. Prodr. V. 551). — v. Schlecliiend. in Linn. 

 XXVL p. 471. — Cfr. I. c. pl. dcscripi. 



TRIGOXOPTERUM Steetz. 

 (Genus proximum ad Macraeam Ilook.) 



Anderss. oni Galapagos - Oarnes vegeiat. p. 183. 



Calathiuni mullifl. , helerogam., fl. radii 1-serialib. ligulatis, foemineis 

 disci tubulosis, hermaphroditjs. Anthodium lii-triseriale, disco brevius, 

 sq. subinacqualib. interiorib. paullisper minorib. omnib. appressis. Rec. 

 convexum, paleac. , paleis florum disci ovaria amplectentib., deciduis. 

 Fl. radii: cor. b. brevit. tubulosa, in ligulam ap. bifidam expansa, ovar. 

 glabriusc. , tiiquetrum b. attenuat. , ap. pappo minimo coronam paleac. 

 inaequaliter dentatam, ciliatam exhibente auctum; styl. glaber exsertus, 

 sligmatis rami breves, obtusiusculi. FI. disci: cor. tubulosa, tubo brevi 

 gracili , fauce subito omi)liata 5-dentafa, dentib. marginafis; filam. 5 

 libera , imae fauci inserta, plana; anth. totidem, laxe cohaerentes nigri- 

 cantes b. ecaudatae, dimidiatao connectivo pallido, ap. ajipendicula 

 libera, ovata oblusa concolore aucfo; ovar. plan. compress. caeteroquin 

 ut in florib. radii ; sfyl. tlaber; sligmafis rami breves, extrorsum curvafi, 

 cono brevissimo acuto , hispido ternjinati. Ach. obovato-cuneafa, difformia 

 radii friquetra, tri-alafa, disci compressa, bi-alata, omnia rugosa, crassa 

 et in vertice calyculo miiiimo, crassiusc, cupulaelormi, hirsutiusculo 

 coronata. 



Frutex in ins. Galapagensib. indigcnus , cinerascens , ram. virgaiis, incano - hirtis, f. 



brevissime peliolatis, opposiiis v. subverlicillatis , approximntis, coriaceis, linearib. 



marg. recurvis, utrinq. pilosis, pedunc. tenninalib., nudis , folia superantib. mono- 



cephalis , capitulis haemisphaeric. . parvis, fl. oranib. lutcis. 

 Genus proxinuim ad Macraeam Hook. accedere videtur. 

 1. TRIGONOPTERUM PONTENI Ands. — Anders. 1. c. p. 184. — Hab. locis silvestrib. 



regionis medine Insulae Charles (600' alt.) ubi fruticeta dcnsa format , et rarius in 



Albemnrle. — In honorem socii in circumnavigatione inihi amicissimi eic. Dr. Pontcn 



plantam pulcliram et insignem dicavimus. — Frutcx ramosissimus, feie biorgyalis etc. 



