208 



XLV. composite: CiCIIOKACEiE. 



oo. 



32. FiLAGO. Heads heterogjimous. luvol. imbricated drv nr.ri ..„ • 



Eecept conical, .vith 1-5 rows of scales Jmoig^t^Ser Sretf ' 

 40. Inula. Heads heterogamous. Invol. imbricated! heiWousFi; 



rets of the ray iii a single ro.v, with a narroW ligule Lth ^-s 

 With bristles at the base. ^ • ^^"ineis 



Ertgeuox Heads heterogamous. Invol. imbricated in several rows 

 J^lorets of the ray in several rows, with a narrow ligule. Antlioi^ 

 without bristles at the base. ^ -^^Hnei^ 



33. Petasites. Subdioecious. Heads monoecious. Invol. in a sino-le ro^v 



herbaceous, with one external row of scales. Fertile florets fili ' 

 form, truncated. ' 



no^:MOGY]S'E. Heads heterogamous, with a single row of filiform 

 pistillate florets in the circumference. Involucre in a sino-le row 

 with an external row of scales. Style with long papillose branches' 

 Anthers without bristles at the base. ' 



Fappus of the florets of the disk pilose. Heads heterogamous with a 



conspicuous ligtdate ray, ^ 



w 



t Anthers almost naked, atjlie base. 



33 



***** 



^4, 



% Florets of the ray with a pilose pappus. 



y 



o 



35 



36. 



37. 



38. 



TussiLAGO. Florets of the ray in many rows. Invol. nearly simnle 



Achenes terete. (Florets homochromous.) 

 Erigeron., Florets of the ray in several rows. Invol. evidently 



nnbncated. Achenes compressed. (Florets heterochromous ) 

 Aster. Florets of the ray many in a single row. Invol. imbricated 



Achenes compressed. (Florets heterochromous.) 

 SoLiDAGO. Florets of the ray few (about 5) in a single row. Invol 



much imbricated. Achenes terete. 

 Senecio. Florets of the ray in a single row. Invol. subcylindrical 



ot one row of equal scales, with or without smaller ones at its base' 



Achenes terete. 



XX Florets of the ray without a pappus. 



39. DoRONicuM. Scales of the invol. of 2-3 rows, nearly equal 



Achenes terete. . -^ ^'i"'*'* 



tt Anthers with 2 hristles at the base. Florets of the ray in a single row. 



40. Inula. Pappus in a single row, pilose. 



41. Pulicaria. Pappus in 2 rows; outer row short, cup-like, mem- 



branous, toothed ; inner pilose. 

 2. Fertile florets without cor. Heads 



Xan 



noncecious. Fertile invol. prickly . 



Moncccious. Fertile invol. 2-flowered. Pappus 0. 



Tribe I. CiCHORACE^. Chicory or Lettuce Tribe 



(Tab. m. A.) 



All the florets with llgulate corollas and perfect (having both 

 Geri-'ti^' '^- ^*^'^' ""' ^^^"^^ ^^^^^tlx its branches 



4 



de^tZ"nTlraLL),7^lS^^^^ 'n the Danmion 



shaped and perfect. ^ ^ov/ets or florets (f. 2.) are ligulate or strap- 



Fig. 1. Head of flowers in bud, the young involucre alone being visible: 



i 





I 



Ji 



