" 
' Helianthoidec.] LXXXVIIL COMPOSITAE. 978 
dentata Wedelie quam maxime variat; quoad pappum in sectiones 2 dividitur :—1. Microchete, pappi 
aristis prominulis; 2. Aphanopappus, pappo ad coronulam minutam reducto v. omnino deficiente. 
Huie addueuntur ScumoruvrruM, Nutt. in Trans. Amer. Phil. Soc. ser. 2. vii. 462 (APHANOPAPPUS, 
Endl. Gen. PI. Suppl. ii. 43; Walp. Rep. vi. 170) e& Macnuza, Hook. f. im Trans. Linn. Soc. xx. 
209; Walp. Rep. vi. 311 (TRiGoNoPrERUM, Síeetz, in Anders. Enum. Pl. Galap. in Trans. Acad. 
Sc. Stock. 1853, 161; Walp. Ann. v. 218, postea ad Macream reduetum in Eugen. Res. Bot. 71, 
t. 6). í 
395. Zexmenia, Llav. et Lev. Nov. Veg. Deser. i. 13. (Lipochsetw sp. Americans, 
DC. Prod. v. 610.)— Capitula heterogama, radiata, floribus radii 9 l-seriatis, discique 
fertilibus, Involucrum nunc hemisph:ericum v. late campanulatum, bracteis 2—3-seriatis 
parum inzqualibus, exterioribus herbaceis, interioribus siccis ; nune ovoideum v. sub- 
globosum, bracteis 3-cO-seriatis siccis apice submembranaceis, exterioribus brevioribus 
rarius herbaceis. Receptaculum convexum, paleis complicatis flores amplectentibus 
involucro brevioribus v. acuminibus solis eminentibus onustum.. Corolle 9 ligulat:e, 
patentes, integre v. 2-3-dentatz ; Ó regulares, tubuloss, limbo parum ampliato v. 
cylindraceo apice breviter 5-fido. Antherz basi integrs v. auriculis parvis muticis 
sagittatz, Styli fl. D rami angusti, hirti, in appendicem brevem acutam desinentes, 
Achzmnia fl. radii 3-quetra, disci a latere compressa, angulis plus minus alatis, apice 
truncata.  Pappi aristz in radio ssepius 3 in disco 2, cum squamellis intermediis dum. 
adsint basi in collum brevissimum seu annulum contractum connatee,— Herb:e suffruticesve 
interdum alte scandentes, scabro-pubescentes v. hirsuüti. Folia opposita, integra v. 
dentata. Capitula mediocria, ad apices ramorum v. in axillis superioribus nunc longe 
pedunculata solitariaque, nunc pedunculis brevioribus corymbosa v. subumbellata. 
Corolla flavz.  Achsnia ssepius pilosula, in sectionis W/edelioidis speciebus paucis basi 
wt in Aspilia squamellis appendiculata. 
Species ad 25, Americz calidioris incole. Wap. Ann. v. 225. - 
Genus ab A. Grayio Pl. Wright. Tex. i. 112, rite recognitum, habitu involucro pappoque Wedelie 
Aspilie et Oyedec affine, achzeniis alatis Oyedec et Verbesine, ligulis Q Wedelie et Verbesine, in sec- 
tiones 3 dividitur: 
1. Wedelioides. Ynvolueri bractez 2—-3-seriate, parum insquales, exterioribus herbaceis; pappi 
ariste cum squamellis intermediis in eyathum distinetum supra achsnium contraetum connatz. 
Huc pertinent inter alia Z. zexana, A. Gr. a Sch. Bip. ad Wirtgeniam relata, Z. brevifolia, A. Gr. cui 
achznia sepe vix alata, Lipocheta longipes, Benth. ex America. centrali et L. scaberrima, Benth. e 
Guiana, L. goyazensis, Gardn. e Brasilia, Walp. Ann. ii. 867 ; JWedelia reticulata, Griseb. Cat. Pl. 
Cub. 154 an DO.? alieque inedite. —Wedelia helianthoides, H. B. et K. Nov. Gen. et Sp. iv. 216, t. 
372, nobis ignota, ob ach:zenia radii alata ad Zezmenian ( Wedelioidem) referenda videtur, etsi achzenia 
disci exalata dicuntur. 
2. Lipocheta. lnvolueri ovoidei v. subglobosi braetez 3—oo-seriatz, late, coriacez, exterioribus 
brevioribus; pappi aristze cum angulis alisve achzniorum continus, squamellis seu setulis inter- 
mediis nunc conspicuis nune minimis v. fere obsoletis. Hue pertinent inter alia Zipocheta umbellata, 
DC., Deless. Ie. Sel. iv. t. 36, et verisimiliter L. angustifolia, Popp. et Endl. Nov. Gen, et Sp. t. 
256, ad Z. (Verbesinam, yina) opino tMfoliam, a Sch. Bip. relata, Verbesina ceanothifolia, Hook. et 
Arn. Bot. Beech. a p d di Lipocheta costaricensis, Benth., Z. Seemanni, Sch. Bip. etc. 
3. Lasianthea aÁCRUUT T. DC. Prod. v. 607). Involueri subglobosi braetez 2-3-seriate latw, 
exterioribus herbaceis v. membranaceis ; pappi aristee cum Angus raro eontinuz absque squamel- 
lis intermediis. Hue pertinent inter alia. Lipocheta macrocephala, Hook. et Arn. (forte & Lasi- 
anthea helianthoide, Zucc. non diversa), Z. elegans, Sch. Bip. in Herb. Hort. Hafn., Verbesina mono- 
cephala, A. Gray, Verbesina aurea, DC. (Wedelia aurea, Don in Bot. Mag. t. 3384), Tithonia ovata, 
Hook., Bot. Mag. t. 3901, ete. In speciebus 2 ultimis achzenia etiam disci swpissime 3-alata 
3-aristata. 
- A Grayii, Sch. Bip. in Seem. Dot. Her. 305, nobis videtur l'erbesine &pecies genuina, Z. salmeoides, 
iod Bip. in Lese Hort. Hafn., est Salmea curviflora, Br. 
verbesinoides, DC. Prod, v. 561 ex ins. Trinidad, quz fide Grisebachii eadem est ae 
ten cáracasana, DC., nobis ab utroque genere longe differre videtur, Specimen Lockhartianum 
