164 45. COMPOSIT. 
inner longer, feathery, dilated at the base. Marginal row 
of fruits enveloped in the scales of the involucre, scarcely 
beaked and with a short crownlike fimbriated pappus. 
38. Aparcia. Involucre subimbricated, exterior phyll. much 
smaller in 1—3 rows. Receptacle punctured. Fr. uniform, 
slightly beaked. Pappus of all the fr. in 2 rows ; outer se- 
taceous, persistent; muner longer, feathery, dilated at the 
base ; or in | row feathery. 
39. Tracopocon. Involucre simple, of 8—10 phyll. con- 
nected at the base. Receptacle punctured. Fr. longitudi- 
nally striated, with a long beak, areola lateral. Pappus in 
many rows, feathery, interwoven in the ray. 
40. Prcris. Phyll. in 1 row, equal, with unequal linear often 
spreading ones at the base. Receptacle dotted. Fr. terete, 
transversely striated, constricted or slightly beaked above, 
areola termimal. Pappus in 2 rows, feathery, external row 
subpilose. 
41. Heumintura. Phyll. in 1 row, equal, with equal subu- 
late adpressed ones at the base, and surrounded by 3—5 
leaflike loose bracts. Receptacle dotted. Fr. compressed, 
transversely rugose, rounded at the end and with a slender 
beak longer than itself. Pappus in several rows feathery. 
**ee* Pannus filiform, deciduous, never feathery nor dilated at 
the base. Receptacle generally without scales. Fruit com- 
pressed. 
42. Lacruca. Heads few-flowered. Phyll. with a mem- 
branous margin, imbricated in 2—4 rows, outer row shorter. 
Fr. plane-compressed, contracted and produced into a fili- 
form beak which is not crowned nor muricated at the base. 
43. Leontopon. Heads many-flowered. Involucre double ; 
inner of 1 row, erect ; outer of few short lax or adpressed 
imbricated phyllaries. Fr. subcompressed, muricated and 
suddenly contracted above, produced into a filiform beak. 
44. Soncnus. Heads many-flowered. Phyll. imbricated in 
2 or 3 rows of unequal scales. Fr. plane-compressed, trun- 
cate above not beaked. 
45. Mutcepium. Heads many-flowered. Involucre double, 
inner of 1 row, outer of short lax imbricated phyllaries. Fr. 
compressed constricted above and terminating in a ciliated 
disk, Outer rows of the pppus rigid and brittle. 
