i —_ A i a a a cat 
eel 
ee ee 
1897] PHYLOGENY AND TAXONOMY OF THE ANGIOSPERMS 153 
PERCENTAGES OF SPECIES BY SUB-ORDERS. 
Cretaceous 
j Eocene Miocene Present 
Schimper | Schimper Durand 
Lesquereux | Schimper 
| LES etre a den Oar eee 21.0 18.0 8.0 8.0 a7 
Polygalale Sec ee teen Ss os ecu eta! Te r2 0.2 0.9 
Caryoplry ales ae. oss. s00's 6 %-0 17.0 3.0 4.0 5.0 
ROPAMMNES pe Hei sah Mee ie t.2 2:5 5.0 
Se ae 16.0 18.0 18.0 9.2 9.8 
ROMO fare xia usin ice wie 11.6 5-5 11.0 11.0 11.0 
NN ial sa 96 aa! Weeoeks 1.9 4.4 2.1 2.7 755 
2S | en 14.0 11.0 15.1 15.4 5.0 
SOMES ook ie oe ee we wees tA 16.0 22.0 24.5 2.6 
ar ae rae 6.0 4.4 7-0 2.3 2.3 
BRM ging ib bch oxen 2.2 Ry 1.8 1.8 1.6 
RR  ecbie asd 4-4 peas atin 25 isi 6.0 3-5 2.1 
MER ae Leek kee We omic 2.5 I.1 3-0 3.6 1.1 
ATE. ho 5 2, & 6 wks ss ~~ ae 0.9 4.3 4.9 
MOURNS ok 56 din oa yd Sema I.I 0.9 3-5 5:0 
EMSOU Ales cer tuerul os oh e oes 0.4 7.0 
a ore a 0.1 4.5 
ARIE a oc eo nulid dum wiies wae 12 1.5 6.0 
po we ee eee eee. 0.3 0.9 13.5 
PERCENTAGES OF SPECIES BY LARGER GROUPS. 
Cretaceous 7 
ene Miocene Present 
] Schimper | Schimper Durand 
Lesq’x (1) | buenas Lesq’x (2) | Schimper 
a 
Apetdlous .. ........ 61.0 | 42.5 64.0 36.3 36.0 15.5 
re sabia PLOWS yo. 6 ive 34.0 | 49.5 32.0 49.6 48.0 36.0 
eae a heres 5.0 | 8.0 4.0 14.0 16.0 48.5 
bas nebo ero 54.7 44.0 55.0 30.0 23.5 27.8 
“op ions on duende 40.5 48.0 42.0 56.0 58.6 — 
Bica “lle res 4:7 5-5 2.0 10.7 a st 
; Tpelate...... yet 1.0 1.8 4.6 19.2 
Loe = Seas ie a 2.2 BS 2.5 19.1 
Ovary superior.....| 86.8 80.0 80.0 ; 78.7 5-0 
Ovary inferior... ... be 20.0 | 20.0 sg 21.3 35.0 
7 For 
(1), and Flora of the Dakota Group ” (2), in 
for the last column were taken from Durand’s 
addition to Schimper’s data. 
F comparison I have given Lesquereux’s results in his Lpeiomnges angel 
e data 
“Index Generum a a 
