Zanthoxylee.] XXXIX. RUTACEJE. 299 
Panieule ample, axillares, ramose, ramulis ferrugineo-tomentosis, Flores sessiles, albi, 
fasciculati, calyce lana immerso. 
Species 1, Mexicana (D. Coulteri, Hook. f.). 
56. Polyaster, Hook f. gen. nov.—Flores hermaphroditi. Calyx parvus, 5-partitus, 
imbrieatus. Petala 5, patentia, oblongo-lanceolata, valvata.  Torus crassus, elevatus, ob- 
scure l0-lobus, glanduloso-punctatus, Stamina 10, subsqualia, basi tori inserta, petalis 
breviora, filamentis subulatis pilosis; antherce late didym:e. Ovarium profunde 5-parti- 
tum, lobis oblongis puberulis apice tori sessilibus; styli perbreves, crassi, connati, stigmate 
depresso capitato 5-lobo; ovula in loculis 2, subcollateraliter inserta. Fructus ignotus.— 
Frutex inermis, puberulus, floribundus. Folia alterna, impari-pinnata, rachide tenuiter 
alato, foliolis oppositis oo-jugis lineari-oblongis obtusis integerrimis sessilibus glanduloso- 
punetatis.  Panieule axillares et subterminales, ramis erectis subdichotomis interdum 
folioliferis. Flores parvi, pedicellis ebracteolatis. 
Species 1 (.P. boronioides), prov. Zimapan Mexici incola, a Coultero lecta, 
57. wrtegastigma, /Took. f. gen. nov.—Flores hermaphroditi. Calyx minutus, 4-partitus. 
Petala 4, oblonga, membranacea, punctata, imbricata. Torus crassus, erectus, basi attenua- 
tus. Stamina 8, basi tori inserta, 4 alterna breviora, filamentis filiformibus glabris; antherze 
ovato-cordatze. ^ Ovarium didymum, 2-loculare, glabrum, lobis oblongis; stylus brevis, 
crassus, stigmate maximo capitato obscure 2-lobo ; ovula in loculis 2, collateralia. Fructus 
ignotus.—Frutex inermis, odoratus, pubescens, ramulis lignosis. Folia alterna, impari- 
pinnata, foliolis co-jugis oppositis lineari-oblongis acutis integerrimis glanduloso-punctatis 
breviter petiolulatis. Panicule terminales, foliis breviores, sub-3-chotome ramoss. Flores 
parvi, albi, pedicellis gracilibus basi bracteatis. 
Species 1 (M. Skinneri), Mexici et Guatemalce incola. 
58? mabelaisia, P/anch. in Hook. Lond. Journ. iv. 519. £. 18.—T'lores dioici. Fl. 4: 
Calyx 5-partitus, laciniis ovatis. Petala 3, calyce duplo longiora, patentia v. revoluta, mar- 
ginibus imbricatis apicibus valvatis. Stamina 3, sub corpusculo (ovaria effceto ?) 3-lobo 
inserta, filamentis brevibus; antherz globose. Fl. 9 : Perianthium d. Cocci basi co- 
lumelle adnati, compressi, apice oblique truncati, intus dehiscentes?, l-spermi. Semen 
sub apice loculi suspensum.—Frutices?, ramulis 3-gonis, inflorescentia petiolisque fur- 
furaceo-lepidotis. Folia alterna, longe petiolata, l-foliolata, membranacea, pellucido-punc- 
tata. Flores minuti, d in capitula parva secus rachidem simplicem in racemulos breves 
congesta glomerati; 9 pauciores secus rachidem breviorem in spiculis densis brevissimis 
conferti. 
Species 2, Archipelagi Indici incole. Genus ovario et fructuque ignotis affinitatis dubiz. 
59. Pilocarpus, Val Eclog. i. 29. t. 10.—Calyx brevis, subinteger v. 4-5-dentatus. 
Petala 4—5, triangularia, ovata, coriacea, patentissima, reflexa, valvata v. leviter imbricata. 
Discus annularis, ovario accretus v. fere obliteratus. Stamina 4—5, infra discum inserta, 
filamentis subulatis; anthers latiuscule, muticz, versatile. Ovarium alte 4—5-lobum, disco 
immersum, glabrum, 4—5-loculare; stylus simplex v. basi 5-partitus, stigmate capitato 5- 
lobo; ovula àn loculis 2, collateralia v. superposita.  Cocci distincti, loculicide 2-valves, 
l-spermi, endocarpio soluto elastice 2-lobo. Semina ovata, exalbuminosa, testa membra- 
nacea; radicula brevis, inter cotyledones crassas retracta.—Frutices. ^ Folia petiolata, 
opposita v. alterna v. 3-natim verticillata, 1—3-foliolata v. imparipinnata, coriacea v. mem- 
branacea, integerrima, pellucido-punctata. Racemi v. spice simplices, valde elongati, ter- 
minales v. axillares, pedicellis patentibus sub medio et apice bracteolatis. Flores inter 
minores, virides v. purpurei, glanduloso-punctati. 
Species ad 5, Ameriez tropicz et Indim occidentalis incole. DC. Prod.i. 728. Walp. Rep.i. 
501: Ann.i. 104: iv. 411.  Griseb. Fl. Brit. W. Ind. 135. A. Juss. Rut. t. 22, 
60. Esenbeckia, Kun, in H. B. et .K. Nov. Gen. et Sp. vii, 246. £. 655. (Polembryon, 
A. Juss. Mem. Rut. 136. t. 49.)— Calyx 4—-5-lobus v. sepala 4-5, decidua. Petala 4-5, 
ovata v. J-angularia, patentissima, imbrieata v. valvata. Discus annularis v. cupularis, 
