ARCTIUM. 
217 
4 ft. high, centre and usually most ot the branches enduig 
in corymbs. L. broadly cordate-ovate, blunt ; petioles solid 
with prominent angles, deeply furrowed. Heads very larye, a 
few of the lower sometimes with short stalks. Fl.-heads not 
umbilic<> te. Fr. yellowish, uMmately dark brown, irregularly 
rugose. — A form with more si)herical and webbed heads (^i. 
tomeatosum Bab.') is common near Cambridge and is the 
Lappa iitalor v. snbtomenfosa Lange 1 — AVaste places. B. VIII. 
E. S. I. 
•2. A. ■)ieii<or6siim (Lejeune -) ; heads race/nose subsessile ovate 
and contracted at the mouth in fr. slightly webbed, phyll. 
equalling or exceeding the tl. subulate inner row lanceolate 
shorter than the others, subcylindrical upper part of fl. as long 
as the lower part. —S;/. E. 11. 701. A . inter inedium (Bab. 1856). — 
St. 2 — 4 feet high. L. convolute, cordate, oblong-ovate, petioles 
hollow, rather angular, nearly Hat above. Heads all nearly 
sessile, less than in Sp. 1, three usually placed close together at 
the end of each branch, ovate-prolonged when young, not 
umbilicate. Most of the phyll. ascending. — Local ? B. YIII. 
E. 8. I. 
3. A. in in us (Bernh. ) ; heads racemose shortli/ stalked (/lobular 
slightly contracted at the mouth in f r. slightly webbed (greenish ). 
phi/H./allintj sho7-t of the Ji. suhul&te inner row equalling the 
others and gradually svrbulate, subcylindrical upper part of fi. 
about as long as the lower part. — i>i/. E. B. 702. Fl. Dan. 2662. 
R. XV. 81 1 . — Smaller than either of the preceding. Central st. 
mostly nodding and as well as the branches having scattered 
small heads : term, head solitary. L. deeply cordate-prolonged ; 
petioles hollow, slightly angular, nearly round, scarcely 
t'urrowed. Fl.-heads not umbilicate. Fr. fuscous with black 
blotches.— Waste places. B. VIII. E. S. I. 
4. A. vulgiire (Evans); heads siibracemose stalked- heml- 
spherieal and open in fr. much webbed (greenish), phyll. 
equalling the li. subulate inner row about equalling the other.s 
and gradually subulate, subcylindrical upper part of tl. as long 
as the lower part. — A. inter medivni (Lange). Si/. E. B. 700. 
Fl.Dan. 2663. R.xv. 812. ^./)z/6e?i.s(Bab.).— S't.aboutS feet 
high. L. deeply cordate-prolonged ; petioles hollow, scarcely 
angular, slightly furrowed. Stalks of the heads rather long. 
1 The true A. tomentosum is not a native of England, though tound as an alien. 
'- Sp. 2 is only a condition (f. pijcnocephalurn) ot .4. vulgan-, which in dry 
seasons and climates has the heads more contracted and shorter stalked (to 
sessile). The amount of wool and purple colour also vary with the elimats. 
See J. 0/ B. 1913. 
