752 METASPERMAE OF THE MINNESOTA VALLEY. 
parison of their data throughout, with those in the general 
tables in the section preceding will serve to bring before the 
reader many kindred facts not mentioned in detail in these 
pages. 
V. EXAMINATION OF DOMINANT METASPERMIC FAMILIES OF 
THE MINNESOTA VALLEY. 
Such families as contain a relatively large number of species 
may be known as the dominant families of the district. Thir- 
teen such families, each with twenty-two species in the valley, 
or more than twenty-two, may be recognised. The dominant 
families furnish 217 genera or 53.6 per cent. of all genera in 
the valley, and 727 species or 61.0 per cent. of the total valley 
species. In order of their importance they may be arranged 
as follows: 
Gen. Spec 
COMPOSI tAC a. hede eae Rogee sas geen Gana etek ee eas 7 re 173 
CY PETACEAG neato ceid so ~ee ne waite denavoraatecrssw a onrslueniat fa) eer 118 
Gramineae..... edie (Bhine aoa. ce ks we des ulguraerad sh see DOiawe eons &9 
LeSUMINOSAC <vake<s¢s0soreloedeas Vesa ees Bae ¥ see ce Lew adinnkoe 55 
ROSaCEAC: nay ai speceae ees eettiemsuae eee tas eatee sy TBs scesacas 54 
Ranuncuiaceae....... ee LatEd Fa@htnawa Seese LD svsiesxieteencis 42 
TWA COAG a 2.sie aastice €.4.9-o-0, ache Reyes. de aaee Seemed Nine ko VD ier teerideecs 36 
Scrophulariaceae.......... 0... cece eee cece eee eeneee Wsiisecnassety 32 
OT CHICKA G 78 raed cactowee sed Gu sa hie teen aawanaea anes TD ssurtvetsasaid 30 
CRUCTICNAG: voicc uur cy cuwokaae a atva’ Ceawaneegeaaas LO ccce-a aeivesssere 30 
Liabidtieun ‘cakes Guvesuces yes suaaeinapataie a! Pie Aine easigapeits 2k 
PolyeQnaCedervcnas aed sage no lager hoes aaumsegannces Dre he ec eis 23 
Wintbellii feraey su. ss -esag yet ewe ec caedaa ae eepetreens IB veatedicns 22 
Each of these families is represented in the valley by a group 
of species of a definite distributional and physiognomic charac- 
ter. To present these characters is the office of the two tabula- 
tions following. In the first, the generic statistics are compiled, 
in the second, the specific. 
* a a ' ' a 
4 2 1) 
| 8/4 }&)/s 11/3/35 |e la. 
g wo | 2 a | al? la.) e | 8 
40. STATISTICS 3 we] a }o 2 | a 2 |3 a5) 3 oo bo 
a : 
ortHEe Domwant] & a|& | 3a| 3 | 4 3 | se} Sls | se 
8 is} = o & o g 7D 72 A fe 
FaMivies, t | & e | ge! 2 | E | eal gee | es 
‘ 4 8]k 12.6] 2 >.) = | og} of] o.| oF 
Generic. So} 8 | & / BS) ym | Fa] 2 | oS] os] os] o8 
s 2 a 4 : : eal Ecol ee) ee 
3 3 is} or fe) om! oO OA] oF] o®!] oo 
a a Z2laA ma | & GB |e Ay oo a 
Gramineae... ....] 39 B 13 4 4 4 4 /12.1)19.6) 8.0] 5.2 
Cyperaceae.......{ IL 5 1 3 2 0 1 4.6] 16] €0] 1.5 
Liliaveae...... 15 0 0 at 7 0 7 0 61 2.0) 5.2 
Orchiduceae....... 12 4 af 2 5 0 2 3.7] 1.6] 4.0] 3.7 
Polygonaceae 2 1 0 1 1 0 0 9 2] 20 7 
Ranunculacea IL 2 3 0 6 0 0 18] 4.9} 0 4.5 
Cruciferae 10 2 4 0 3 0 2 1.8] 65] 0 23 
Rosaceae... 13 1 2 2 ll 0 0 AY 3.2 | 4.0] 8.2 
Leguminosa 21 8 2 4 6 1 3 7.4] 3.2] 8.0] 4.5 
Umbellferae.... 13 3 4 al 3 0 4 2.8) 65.] 20 ) 2.3 
Eabiarte cecasevess 14 5 0 0 4 A, 4 4.6] 0 0 3.0 
Scrophuluriaceae} 13 if, 3 1 4 1 3 9] 4.9] 2.0} 80 
Conipositae.......| 48 10 5 5 8 9 RP 9.3] 8.2] 10.0] 6.0 
Total Dominant.| 217 §5 38 24 67 16 42 | 51.4 | 62.3 | 48.0 | 50.0 
