A RCTIUM . SERRATULA . 
187 
others, suhci/Umlrical tqyjur part of fl. as long as the lower part. 
—R. XV. 812.— St. 2—4 feet high. Heads less than in Sp. 2, 
three usually placed close together at the end of each branch ; 
ovate-prolonged when young. Most of the ph3"ll. ascending. 
A doubtful plaut. — Local ? Berwickshire. "^Var^vickshire. B. 
VIII. E. S. 
4. A. minus (Sclik.) ; heads i-acemose shortly stalked globular 
slightly contracted at the mouth in fi-. slightly webbed (greenish), 
phyll. falling short of the fi. subulate inner row equalling the 
others and gradually subulate, subcylindrical upper jjart o f fi. 
about as long as the lower part. — JS. B. 1228. It. xv. 811. — 
Smaller than either of the preceding. Central st. mostly nod- 
ding and as well as the branches having scattered small heads ; 
term, head solitary. L. deeply cordate-prolonged; petioles 
(hollow) slightly angular, nearly round, scarcely furrowed. Fr. 
fuscous with black blotches. — Waste places. B. VIII. E. S. I. 
5. A. puhens (Bab.) ; heads suhracemose stalked hemispherical 
and open in fi-. much webbed (greenish), phyU. equalling the 
fl. subulate inner row about equalling the others and gradually 
subidate, subcylindrical upper part of 11. as long as the lower 
part. — See A. N. H. ser. 2. xvii. for an accoimt of this plant and 
its allies. — St. about 3 ft. high. L. deeply cordate-ovate ; 
petioles (hollow) scarcely angular, oval, slightly fun'owed. 
Stalks of the heads rather long, those of the lower heads longest. 
Heads usually with much wool, twice as large as those of A. 
minm. Fr. dark brown with a few paler spots towards the top. 
—Waste places. B. VIH. E. I. 
Section 2. SERRATULE^. Heads many-flowered ; flowers 
all tubular, perfect or dioecious, the external row sometimes 
female. Involucre of many rows of distinct phyllaries. Fila- 
ments distinct. Pappus in many rows of different lengths, inner 
row longest, hairlike or feathery, surrounded by a margin. 
27. Serrat'xxla Linn. Saw-wort. 
1. S. tinctdria (L.) ; 1. with bristly serratirres pinnatifid some- 
what hnrate, heads oblong corymbose, phyll. ovate adpressed, inner 
ones linear coloured. — E. B. 38. St. 3. 16. — St. 2—3 feet high, 
straight, erect, angidar, branched above. L. pinnatifid or lyrate, 
rarely entire. Fl. purple. — Groves and thickets. P. \T;II. E. 
^Qciion^. CENTAUREyE. Heads many-flowered, discoidal; 
outer row of fl. usually bai-ren, enlarged, iiTegular. Phyllaries 
in many rows. Filaments distinct. Pappus in many rows of dif- 
ferent lengths, second row longest, setaceo-pilose, placed within 
the margin which surroimds the epigynous disk, rarely 0. 
