578 SYSTEMATIC BOTANY, 



LabiatiJlortB, which included those plants the florets of which 

 were bilabiate ; this group was unknown to Jussieu. The 

 arrangement most frequently adopted at the present day, is that 

 of De Candolle, which was founded on that of Lessing. It is as 

 follows : — 



Sub-order 1. Tubuli/lorce. -^'Florets tubular or ligulate, either 

 perfect, unisexual, or neuter. Perfect florets tubular, with 5, or 

 rarely 4, equal teeth. This sub-order includes the Corymbiferce 

 and Cynarocephalce of Jussieu. It has been divided into five 

 tribes : — 



Tribe 1. Vtrnoniece. Style cylindrical ; its arms generally long 

 and subulate, sometimes short and blunt, always covered all 

 over with bristles, (Jig. 956, 1). Examples: — Adcnocyclus, 

 Vernonia, Elephantopus. 



Tribe 2. Eupatoriece. Style cylindrical ; its arms long and 

 somewhat clavate, with a papillose surface on the outside 

 near the end (Jiy. 956, 2.) Examples: — Eupatorium, Agera- 

 tum, Tussilago, Petasites. 



Tribe 3. Asteroidea. Style cylindrical ; its arms linear, flat 

 on the outside, equally and finely downy on the inside, 

 {Ji(j. 956, 3). Examples: — Erigeron, Bellis, Inula, Pulicaria. 



Tribe 4. Senecioideoe. Style cylindrical ; its arms linear, fringed 

 at the point, generally truncate, but sometimes extended 

 beyond the fringe into a short cone or appendage of some 

 kind (^9. 956, 4 and 5). Examples: — Anthemis, Anacyclus, 

 Artemisia, Tanacetum, Arnica, Senecio. 



The above four tribes correspond to the sub-order Corymbiferce 

 of Jussieu ; the next tribe to the Cynarocephalce of the same author. 



Tribe 5. Cynarea:. Style thickened above, and often with a 

 buiich or fringe of hairs at the tumour ; its branches united 

 or free, {fig- 956, 6). Examples: — Calendula, Echinops, 

 Arctium, Carlina, Centaurea, Cnicus, Carthamus, Cynara. 



Sub-order 2. Labiatiflorce. — Hermaphrodite florets, or at least 

 the unisexual ones, divided into two lips. Of tliis sub-order 

 we have two tribes: — 



Tribe 6. Mutisiece. Style cylindrical or somewhat swollen ; 

 its arms usually blunt or truncate, very convex on the outside 

 and covered at the upper part by a fine uniform hairiness 

 or al)solutcly free from iiairs (fig. 956, 7). Examples: — 

 Barnadcsia, Mutisia, Printzia. 



Tribe 7. Nassaviece. Style never swollen ; its arms long, linear, 

 truncate, and fringed only at the point {fig. 956, 8). Ex- 

 amples : — Nassavia, Anandria, Trixis. 



Sub-order 3. JJguliflora-. Florets all ligulate and perfect 

 This corresponds to the Cichoracece of Jussieu. 



Tribe 8. Cichorece. Style cylindrical at the upper part ; its 



