1905] 
NELSON—ROCKY MOUNTAIN PLANTS 
55 
combination and a reference to what seems.to be the first publication 
of the species or variety. 
KEY TO THE SPECIES.* 
Flowers yellow, sometimes turning red or green. 
Capsules straight. 
WMIORM, 5 5 eke perc Coens wane § 
1a 
tb 
Narrowly: linear: 5445505 5555s ages 2 
Capsule more or less curved or contorted. 
Narrowly linear, cylindrical or nearly so. 
Curved but not contorted. 
Capsule beet (less than 2°™). . 
Capsule long (more than 2°™). : 
Flowers 1°™ or more in diameter.. 5. 
5a 
5b 
5c 
Retrictetl os sss ea ee 6. 
More or less contorted............-- : 
7a 
7b 
7C 
Broadly linear, more or less 4-angled. 
Whole plant glabrous.............:. 
Plant not wholly glabrous. 
Flowers small (1°™ or less broad). 
Stems virgate, fructiferous to the base. 
Stem leaves ovate-triangular... 9. 
Stem leaves oblong lanceolate IO. 
Stems branched from the base... 
11a. 
11b. 
Flowers large (more than 1°™ ee 
Leaves canescently pubescen 
Narrowly oblong or ae 
CALE a es 12 
: 12a. 
a 
5. 
andinum. : 
ardinum Hilgardi. 
« ddinum minutum. 
jliforme. 
Nelsonit. 
chamaenerioides. 
cam pestre 
campestre helianthemiflorum. 
campestre minus. 
cam pestre mixtum. 
rejractum. 
contortum. 
contortum flexuosum. 
contortum pubens. 
contortum Greenei. 
nitidum. 
arenicolum. 
hirtellum. 
micranthum. 
micranthum Jonesi. 
micranthum exjoliatum. 
bistortum. 
bistortum Veitchianum, 
4The following species are not included in this table: S. angelorum (Wats.), 
S. plerospermum (Wats.), S. rutilum (Davids.). 
