Cremanthodium, Bentham, 1873

Wang, Long, 2020, Resurrection of Cremanthodium gracillimum and C. wardii (Asteraceae, Senecioneae), with notes on the genus in Myanmar, Phytotaxa 446 (3), pp. 183-198 : 196

Key to species of Cremanthodium in Myanmar

1. Basal leaf blades reniform, reniform-cordate, orbicular-reniform, or suborbicular, palmately veined..............................................2

– Basal leaf blades broadly triangular or ovate-triangular, hastate or cordate, pinnately or palmately-pinnately veined ....................8

2. Capitula without ray florets; phyllaries petaloid, membranous..........................................................................................................3

– Capitula with ray florets; phyllaries leaflike, herbaceous ..................................................................................................................5

3. Basal leaf blades palmatisect..................................................................................................................................... C. pinnatisectum

– Basal leaf blades not divided..............................................................................................................................................................4

4. Phyllaries hairy all over, less than twice the length of tubular florets..................................................................... C. campanulatum

– Phyllaries usually hairy at base, more than twice the length of tubular florets..................................................................... C. wardii

5. Ray laminae lanceolate to ovate-lanceolate, oblong, apices acuminate, obtuse or rounded, entire or shallowly denticulate............6

– Ray laminae oblanceolate, apices truncate, conspicuously 3-lobed...................................................................................................7

6. Petiolar bases of proximal and middle stem leaves enlarged into leaf blades, margins irregularly sharply dentate; ray laminae oblong, apices obtuse or rounded ......................................................................................................................................... C. farreri

– Petiolar bases of proximal and middle stem leaves not enlarged, margins entire; ray laminae lanceolate to ovate-lanceolate, apices acuminate.......................................................................................................................................................................... C. pulchrum

7. Basal leaf rosettes present; stem leaves absent or 1−2; several subulate bracts borne below the involucres ............. C. gracillimum

– Basal leaf rosettes absent; stem leaves absent or 5−14; bracts absent ................................................................... C. rhodocephalum

8. Plants ca. 40 cm tall; basal leaf blades cordate; capitula many, arranged in paniculate raceme .................................. C. magnificum

– Plants 10−30 cm tall; basal leaf blades never cordate; capitula usually solitary................................................................................9

9. Basal leaf blades triangular or ovate-triangular; ray laminae linear-lanceolate, apices acuminate, shallowly 3-denticulate .............. ........................................................................................................................................................................................... C. delavayi

– Basal leaf blades hastate; ray laminae oblanceolate, apices truncate, deeply 3-lobed ....................................................... C. forrestii