86 | | Muhlenbergia, Volume 4 — 
Centaurium Nuttallii (Wats.) 
Erythraea Nuttallit Wats. Bot. King Exped. 276. pi. 29. 
in part. 1871. 
This was found during the past summer in meadows at 
Deeth, Nevada, growing on the banks of the Humboldt in rather 
gravelly damp places, and was also seen in Ruby valley, one of 
the original localities cited. In Bot. Cal. 1: 480, Gray says 
Erythraea Douglasti is ‘Erythraea Nuttallii, Watson, Bot. 
King Exp. 276, in part,” but that Mié¢adliz is distinguished “by 
the acutish lobes of the commonly larger corolla, and the oblong 
seeds.” The seeds of Douglasz are described as globular. Ap- 
parently AZ. 29 represents Vuttalliz with perhaps the exception 
of the figure showing the enlargement of the corolla. 
Centaurium arizonicum (Gray) 
Erythraea calycosa var. Arizonica Gray, Syn. Fl. 2: Part 
L003. 0878, 
Erythraea Arizonica Rydb. Bull. Torr. Club, 33: 148. 
1906. 
This has recently come to me from southeastern Arizona, 
no. 1792 J. C. Blumer, collected in the Chiricahua mountains. 
It is a tall plant, sometimes over 4 dm. high, the lower larger 
leaves oblong, 3.5cm. long, 6 or 7mm. wide, acute or somewhat 
obtuse; upper leaves reduced, linear and acute: pedicels usually 
as long or longer than the calyx, this 5 or 6mm. long in flower, 
Icm, in fruit, 1 to 3mm. shorter than the yellow corolla tube; 
lobes of the corolla rose-purple, elliptical-oblong, 7mm. long, 
3mm. wide, the rounded apex slightly mucronate: stigma flabel- 
liform and truncate, 1mm. wide. Corolla tube the same length 
as the lobes, 7 mm. 
The examination of this plant has brought out two, or 
rather three, characters that I do not find mentioned in the Syn- 
optical Flora. The flowers are said to be “mostly red or rose 
color.” But the corolla tube of the red flowered ones at least is 
yellow, aud in the species under consideration is slightly en- 
larged into a throat. While the shape of the very smal seeds 
is sometimes given, I find no mention of their surface appear- 
ance. ‘The seeds of arzzonicum are somewhat globular, strongly 
pitted. ‘This pitting is probably a generic character. 
