Aster. COMPOSITjE. 157 



A. Tartavicus {Li7in. /".), DC. will perhaps fonn a mere section of the same gi-oup. 

 We are acquainted with only two species of Calimeris (thus retricted), viz. C. incisa 

 and C. integrifolia: the genus should be placed next to Boltonia. — In Sir Wm. 

 Hooker's herbarium, two plants (collected at Simla by Lady Dalhousie), very 

 similar in habit and foliage, are labelled ' Calimeris flexuosa' by Dr. Lindley, 

 neither of which altogether accords with the character given by De CandoUe. Both 

 have a broad and perfectly flat receptacle, and a loose involucre of two series of 

 scales ; the exterior larger, unequal, and more or less foliaceous. One of them has 

 a double pappus ; the inner capillaiy and as long as the corolla, the outer setaceous 

 and shorter than the achenia; it therefore belongs to De Candolle's Diplopappus § 

 Calimeridei (certainly not a congener of D. linariifolius, &;c.), and is probably C. 

 asoerulus, DC. The other presents a simple setaceous-subulate pappus, shorter 

 than the achenia and not exceeding the proper tube of the corolla, nearly similar to 

 the exterior pappus of the preceding plant, which it nearly resembles. The two 

 should doubtless be united in the same (new 1) genus ; to which, we may remark, 

 the Aster peduncularis, WaU. ! cat. no. 29G7 (Amphiraphis peduncularis, DC. prodr.) 

 also belongs. The pappus of the latter is manifesdy double, and the rays doubtless 

 not yellow. 



♦ Scales of the hemispherical involucre unequal, narrmdy lanceolate or linear, loosely 

 imbricated in 2 or 3 series : alveoli of the receptacle toothed and lacerate : appendages 

 of the style lanceolate : achenia glandular {or hairy) : heads loosely corymiose : leaves 

 ample, cmieiform-lanceolate, coarsely toothed toivards the summit, pinnately veined. 



This section might include Aster Tartaricus, Limi. f, DC. ; which has more 

 obtuse appendages to the style, and broader hairy achenia. 



111. A. acuminatus (Michx.) : stem simple, flexuous, pubescent or hairy, 

 paniculate-corymbose at the summit ; the peduncles slender ; leaves oblong- 

 lanceolate or cuneiform-lanceolate, conspicuously acuminate, coarsely or in- 

 cisely toothed above, the narrowed base, entire, glabrous above, the margins 

 finely ciliate ; scales of the involucre lax, membranaceous, acuminate; ache- 

 nia narrowly oblong, glandular. — Michx. ! fl. 2. p. 109 ; Pursh ! fl. 2. p. 

 555 ; Bigel. ! fl,. Boat. ed. 2. p. 312 ,• HooTc. ! hot. mag. t. 2707, ^ fl. 

 Bor.-Am. 2. p. 9; not of Nees. A. diffusus var. acuminatus, Pers. syn. 

 2. p. 447. Diplostephium acuminatum, DC. ! prodr. b. p. 273. 



In deep rich woods, Canada ! to the mountains of Virginia ; not uncom- 

 mon in the New England States ! and New York. Aug.-Oct. — Rhizoma 

 slender, creeping. Stem 1-2 feet high, bearing rather numerous heads in a 

 loose paniculate corymb ; or frequently flowering when only 6 inches high, 

 and bearing very few heads ; the slender peduncles and pedicels pubescent, 

 slightly viscid, leafless, or with a few subulate bracts. Cauline leaves 3-6 

 inches long, membranaceous, pubescent or hairy on the veins, at length near- 

 ly glabrous. Heads from one-third to half an inch in diameter. Scales of 

 the involucre nearly glabrous, membranaceous throughout, often purple, the 

 innermost linear, very acute, about the length of the disk ; the exterior suc- 

 cessively .shorter. Rays 12-18, elongated, white, often tinged with purple. 

 Appendages of the anthers subulate-lanceolate. Appendages of the style 

 subulate-lanceolate. Bristles of the pappus capillary, unequal in length, but 

 otherwise similar. — There is no proper exterior pappus, as in Diplopappus, 

 &c. : nor are the bristles more unequal than in many genuine Asters. 



* * Scales of the turbinate-hcmisphcrical involucre narrowly linear -lanceolate, rather 

 closely imbricated in about 3 series ; the innermost scarcely as long as the disk ; the 

 exterior shorter, loose, passing into subulate bracts : alveoli of the receptacle short, denti- 

 culate : branc/ies of the style broadly linear, terminated unthaslwrt aculish appendage: 

 achenia obovoidAurbiiiate, turgid, GS-ribbed, glandular : pappus copious, obscurely 

 scaltroiLS : leaves crowded, lanceolate, mostly entire ; the lower surface someu-hat pin- 

 nately veined, minutely dotted with resiuMis globules : heads terminating tlie simple 

 pedunculifm-m branches. (Galalella I Calianthus, Nuti.) 



