96 



Tribe 8. SBiTECioNiDEJi:. — Plower-heads teterogamous radiate or 

 disciformis, or wanting rays and homogamous. Involucral bracts 



• usually 1- seriate and subequal, with a few short outer ones at their 

 base, rarely many-seriate. Eeceptacle often naked. Anthers tailless 



■ or with 2 short points at the base. Style-branches o5 hermaphrodite 

 flowers often penicillate, truncate or appendiculate. Achenes various. 

 Pappus of fine hairs, rarely bald. Leaves alternate or rarely opposite. 

 Corolla of disk yellow, rays also usually yellow but various. 



Subtribe Husenecionem. — Involucral bracts 1-2-seriate, free nearly 

 to the base, usually with a few smaller outer ones. Style-branches of 

 the hermaphrodite flowers truncate or obtuse, penicillate or with hairy 

 tips. Examples : Qynurai Cineraria, Senecio. This subtribe, it will 

 be seen, is composed of some of the most beautiful plants in cultivation, 

 while others are most troublesome weeds. , 



Tribe 9. CALEinDULA.CE;E. — Flower-heads heterogamous, radiate. 

 Involucral bracts 1-2-seriate, narrow, subequal. Receptacle naked. 

 Anthers with a mucronato-subcaudate base. Style-branches of the 

 hermaphrodite flowers truncate, in the sterile, flowers undivided. 

 Acheues (often heteromorphous or thick) bald or rarely crowned 

 with a little woolly tomentum. Leaves usually alternate or radical. 

 Example : Calendula. The genus quoted contains the common pot 

 Marigold. 



Tribe 10. Aectotide^. — Plower-heads radiate or wanting rays 

 and homogamous. Involucral bracts many-seriate, imbricate, points 

 sometimes broad and scarious, sometimes very acute or spinescent. 

 Anthers with an entire or sagittate base, the auricles obtuse or acute, 

 never tailed. Style-branches of the fertile hermaphrodite flowers 

 sometimes somewhat broad with rounded points, often united high 

 up, or the sterile styles undivided. Achenes often thick, bald, or 

 pappus paleaceous or coroniformis. Leaves radical or alternate. 



Subtribe Muarctotem. — Heads distinct. Involucral bracts free, 

 and at least the interior one with broad scarious points. Examples: 

 Gymbonotus Cryptostemma. The genera brought under notice are 

 weedy plants, the first indigenous to our Darling Downs ; the latter 

 i-s the African plant known as Cape-weed. 



Subtribe Oorteriew. — Heads distinct. Involucral bracts joined 

 at the base, the points acute, very acute or spinescent, or rarely 

 foliaeeoua. Example : Qazania, a very handsome genus of border 

 plants. 



Tribe 11. CTNAEOiBEiE.—I'lower-heads tubular. Involucral bracts 

 many-seriate, imbricate, with scarious, spinous, or foliaceous tips. 

 Keceptacle often fleshy, densely bristly or paleaceous, rarely simply 

 pitted. Corolla-limb slender, deeply 5-fid. Anthers tailed. Styles 

 subentire, or the branches short-hairy, or thickened towards the base. 

 Achenes often hard. Pappus various, rarely none. Leaves alter- 

 nate, often spinous. 



Subtribe Cardninece. — Heads many-flowered, separate. Achenes 

 glabrous, basal areole horizontal. Pappus-hairs distinct or connate. 

 Examples : Carduus, Spear thistle ; Cynara, Artichoke ; Silybum, 

 Virgin Mary's thistle. 



Subtribe Centaiireea. — Heads separate, many-flowered. Achenes 

 glabrous, basal areole oblique or lateral. Example: Centaurea (see 

 Bluebottle, and others). 



