5535 Linum (Cathartolinum) 
Petals without ventral appendages. No stamnodia. 
In the North American Flora this plant runs to Cathartolinum 
australe (Heller) Small. It answers uhe description fairly well hut 
Heller ( Bull. Torr. Bot. Club ^ol 25, page 627 ) states that the 
sepals are 5 mm. long and that the petals are little linger than the 
calyx. Rydberg in the North American Flora states that sepals become 
6-8 mm. long. 
In 5535 the sepals are the same length as the capsul, noy over 4 l/2 
mm. long, one mm. of which is the terminal spine. The petals are 
S-9 mm. long. 
None of ohe specimens cited by Heller or Rydberg are available. At 
Pomona are three specimens, Townsend and Barber Np. 83 Chihuahua, 
Mexico; Baker 451 Arboles, Colo, and Eggleston 15181 Wray, Colo. 
The floral parts of these are a goos match for 5535 but the leaves 
of all three are much shorter and narrower. 
I have a set of this for the Exsiccatae Grayana. 
