72 COMPOSITE. 



Subtribe IV. HELENIE.E. (Bacriece & Euhelsniece, Bentli. & Hook., excl. gen.) In- 

 volucre hardly at all imbricated ; its bracts when broad nearly equal or in a single 

 series. Ligules not persistent. Disk-flowers numerous except in Schkuhria, with 5 

 or rarely 4 teeth or lobes. Akenes few-nerved or angled, or more numerously striate- 

 angled only when turbinate or pyriforni. No oil-glands. (Raillarddla, 190, might 

 be sought here.) 



* Anomalous : akenes (as iu Perityler?) flat-compressed, ivith no lateral nerves, the callous 

 or nerved margins densely ciliate-friuged : rays fertile or none : disk-corolla with dilated 

 limb : style-tips truncate-capitate, with or without a slight cusp. 



1 37. EATONELLA. Involucre of 5 to 8 oval or oblong obtuse and distinct bracts. Recep- 

 tacle hardly convex. Disk-corollas short. Akenes callous-margined,, ciliate with dense very 

 long villosity, outermost obcompressed. Aspect of EriopJnjllinn. 



137J.. CROCKERIA. Involucre and other characters of Lcmtlir.nia HoJorjymne. Akenes 

 obovate-oval, very densely fringed with clavate glandular hairs. See Supplement. 



* * Baeria type : receptacle conical, mostly hi^h-conical and acute, beset after the akeues 

 have fallen by projecting points (as if pedicels, on which they were inserted) : bracts of 

 the involucre herbaceous, iu one or rarely two series and commonly broad, sometimes 

 cupulate-connate : female flowers ligulate, or sometimes wanting: akenes narrow and 

 from oblong (or in one l\fii<f!i>]>in somewhat obovate) to linear, usually tapering to the 

 base, few-nerved and angled or nerveless, not callous-margined : herbage not impressed- 

 punctate nor resinous-atomiferous. 



i Involucre (almost always) gamophyllons and simple, hemispherical or campanulate : 

 disk-corollas with rather slender tube and dilated throat or limb: anther-tips ovate or 

 oblong : style-tips capitate-truncate or obtuse. 



143. ERIOPHYLLUM. Akenes slender, and usually with a paleaceous pappus. 



138. MONOLOPIA. Head conspicuously radiate, with broad ligules: inner disk-flowers 

 often infertile. Receptacle high-conical. Involucre broad, of one or rarely two series of 

 bracts, which are normally connate by their edges into a several-loo! lied or lobed hemispheri- 

 cal cup, but sometimes distinct even to the base. Lobes of disk-corollas somewhat bearded. 

 Akeues obovate or obovate-oblong, quadrangular-compressed or the outer obcompressed- 

 triaugular, sometimes acute-margined, with small terminal areola, and no pappus. Floccose- 

 tomeutose and alternate-leaved annuals. 



139. L, ASTHENIA. Head radiate, or discoid by diminution of the ligules: disk-flowers 

 all fertile. Involucre a single series of bracts connate by their edges into a 5-15-toothed 

 glabrous green cup. Disk-corollas 4-5-lobed. Akenes linear or narrowly oblong, coin- 

 pressed, slightly 2-3-nerved or nerveless, nearly marginless, scabro-puberuleat or glabrous. 

 Pappus of 5 to 10 firm and subulate-tipped piilcaj, or none. Glabrous and smooth annuals, 

 with opposite entire sessile leaves 



) H Involucre of few or several distinct and thinnish herbaceous bracts in a single series, 

 loose, open at maturity of fruit, not rarely deciduous: disk-corollas with slender tube 

 which equals or exceeds iu length the campanulate or cyat Inform 5-lobed (rarely 4-lobed) 

 limb : leaves all opposite, sometimes connate at their sessile bases. 



140. BURRIELIA. Head few-flowered, discoid, the 1 to 3 female flowers with li-ule 

 wanting or shorter than the style. Involucre cylindraceous, of 3 or 4 narrowly oblong plane 

 bracts. Receptacle slender-subulate. Style-tips short-ovate, rather obtuse. Akenes slen- 

 der, fusiform-linear, flattish. Pappus of 2 to 4 long attenuate-subulate paleae. 



141. BAERIA. Head mostly many-flowered, radiate: rays 5 to 15, conspicuous. Bracts 

 of the campanulate or hemispherical involucre as many, ovate or oblong, plane or becoming 

 somewhat carinate at middle, at least below. Receptacle subulate to high-conical. Style- 

 tips from truncate-capitate, with or without a central apiculation, to ovate and sometimes 

 with a cuspidate appendage. Akeues clavate-liuear to linear-cuneate. Pappus a few palea; 

 or paleaceous awns, or both, often wanting. 



* * * Bahia type: receptacle flat or convex (rarely obtusely conical) : akenes from linear 

 to obpyramidal, rarely 5-augled, occasionally with intermediate nerves : flowers (with few 

 exceptions) all fertile. 



