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FOC | Family List | FOC Vol. 20-21 | Asteraceae | Aster

5. Aster sect. Pseudocalimeris Kitamura, Mem. Coll. Sci. Kyoto Imp. Univ., Ser. B, Biol. 13: 363. 1937.

假马兰组 jia ma lan zu

Heteropappus Lessing.

Herbs, perennial, biennial, or annual, simple or branched, erect, ascending, or decumbent. Leaves basal (withered at anthesis) and cauline; blade linear, oblong-lanceolate, oblanceolate, or spatulate-oblong to spatulate, margin flat, entire or remotely serrate or crenate, 1-veined. Capitula radiate, sometimes discoid, terminal, corymbose-paniculiform or solitary at ends of branches or stems. Involucres hemispheric or patelliform; phyllaries 2- or 3-seriate, subequal (outer sometimes shorter), not keeled, margin sometimes scarious. Receptacles flat. Ray florets 1-seriate, sometimes absent, 15-40, purple, lilac, blue, pink, or white; disk floret limb campanulate, narrowly campanulate, or funnelform, lobes unequal (1 lobe deeper). Achenes obovate or obovoid to obovate-oblong, compressed to flattened, 2-ribbed. Pappus of ray florets sometimes absent or few, short, of disk florets present, 1-3-seriate, persistent or deciduous, inner bristles acute (when present), outer series of free (rarely connate) short scales or bristles.

About 17 species: C and E Asia, E Europe; 12 species (three endemic) in China.


1 Perennial herbs, rarely biennial; pappus of ray and disk florets identical   (2)
+ Annual or biennial herbs, sometimes also perennial (A. arenarius); pappus of ray florets usually short, sometimes absent or equaling that of disk   (6)
       
2 (1) Capitula discoid.   23 A. eligulatus
+ Capitula radiate   (3)
       
3 (2) Plants 2.5-7 cm, thickly taprooted.   22 A. boweri
+ Plants (3.5-)5-60(-100) cm, not taprooted   (4)
       
4 (3) Phyllary margin herbaceous or narrowly scarious.   20 A. asagrayi
+ Phyllary margin ± broadly scarious (at least inner series)   (5)
       
5 (4) Phyllary margin broadly scarious; stems erect; ray florets ca. 20.   19 A. altaicus
+ Phyllary margin broadly scarious in inner series; stems decumbent to ascending; ray florets (20-)25-35.   21 A. semiprostratus
       
6 (1) Leaves glabrous or glabrate (margin conspicuously ciliate)   (7)
+ Leaves hairy   (8)
       
7 (6) Stems erect; cauline leaves glabrate.   28 A. oldhamii
+ Stems procumbent; cauline leaves glabrous or sometimes sparsely strigose.   27 A. arenarius
       
8 (6) Plants 8-30 cm tall, branched from base, branches decumbent to ascending.   30 A. gouldii
+ Plants 10-50(-150) cm tall, branched from middle, branches ascending   (9)
       
9 (8) Pappus of ray florets long.   26 A. neobiennis
+ Pappus of ray florets absent or of short bristles (shorter than on disk florets); ray achene narrow, sterile   (10)
       
10 (9) Capitula 30-50 mm in diam.; middle cauline leaf margin coarsely serrate in upper part or entire.   25 A. meyendorffii
+ Capitula 10-25 mm in diam.; middle cauline leaf margin entire or crenate   (11)
       
11 (10) Ray pappus a crown of scales; cauline leaves oblong-lanceolate or linear, margin entire.   24 A. hispidus
+ Ray pappus a few short bristles or equaling that of disk; cauline leaves spatulate-oblong, margin crenate.   29 A. crenatifolius

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