| “tg Achenial Hairs of Composite. Le ae 
“theorder, and further states that the pappus is of greater di- 
gnostic value than the achenium. Whether or not the state- 
‘Hence their value as specific characters remains to be deter- 
4 mined ’ 
~The hairs on the Composite, especially those of Senecioni- 
de, are of peculiar interest. 
The subject has been discussed by Pammel?!°® and refer- 
ences given, 
Harz!) § 
“eng and Chrysanthemum. He figures the hairs on 
: 'Slephus Chinensis and Zinnta vertictllata in his Frucht- 
€ der Compositen. 
4 Heineck12 ; 
the mo points out similarities of achenial-hair structure 
| Mey in oi pely allied groups and also notes a discrep- 
| M classic © group Cynarotdee, which, if this be made a basis 
e sation, would lead to the division of the group, plac- 
the true thi i Aer anthemum nearer the Asteroidee while — 
istles, in the absence of hairs, resemble the mem- 
; itd fey a ee C. tchorice. Macloskie has further described 
fis org © hairs on different genera of other tribes of 
tr 
cr. 
"Loose, Ric Sto.: Amer, Naturalist, J 88 : ' 
* i ‘ . , an, I ne * 
den Pahoa - Bedeutung der Frucht und Samenschale der Composi- 
*n und keimenden Samen, Inaugural Dissertation, Ber- 
Weg at usa On’ the seed-coats of the genus Euphorbia, Trans. ae 
i,t Mucilaginons ov] 9. ra _ He gives a list of papers bearing on ” 
 MAR?. ‘cae "Walls in this r. 
™ittschaftliche Samen Kunde 11. 843-866. Paul Parey, Ber- 
tans : Beitr. : : ave 
Trangural Diag tts des feineren Baues der Fruchtschale 
