4 Rhodora [JANUARY 
be good species or only forms of the above two species. They evidently 
represent more than one race. The writer believes that the names 
O. parviflora L.' and O. muricata L.? apply to the same species.* O. 
parviflora was said by Linnaeus‘ to differ from O. biennis in having 
the apex of the fruit "coronatus margine octifido nec quadrifido”’ 
and to have stems with scattered hairs without tuberculate bases, 
leaves repand-subdentate less soft, calyx tube "* quadruplo-brevior, "" 
denticulate below the apex (therefore the mucros distant before anthe- 
sis) and distant petals half as large as those of O. biennis. No species 
other than the so-called O. muricata answers this description. This 
species in many of its forms does not have muricate hairs and the 
petals are often small. 'The eight-lobed fruit would seem to have 
been an error or based on an unusual plant; but the four lobes are in 
many plants slightly retuse, and it would not be strange if Lin- 
naeus' plant were an extreme in this respect. None of the numerous 
names proposed in Oenothera seem to apply to the three New York 
State forms here under consideration other than those cited above. 
Since these three forms are characteristic types in central New York, 
it is necessary to give them legitimate varietal names. In so doing O. 
biennis L. is interpreted in the sense of Bartlett.’ 
RHODODENDRON NUDIFLORUM (L.) Torr., var. roseum (Lois.), var: 
nov. Azalea rosea Lois. in Duham. Traite Arb. Arbust. ed. 2, v. 
224, t. 64 (1812). Rhododendron roseum Rehder, Monog. Azaleas, 
Pub. Arnold Arb. ix. 138 (1921). A. prinophylla Small, N. Amer. 
Flora xxix. 42 (1914). 
The earlier var. rosea Sweet was a nomen nudum. After a study of 
his own material and that in the Gray Herbarium the writer is unable 
to accept the view of Rehder that this is a species distinct from R. 
nudiflorum. In fact it seems to grade into that and at most the dif- 
ference is one of pubescence only. 'The writer has been unable to 
make out a stamen difference as cited by Rehder. 
Aster lucidulus (Gray), sp. nov. A. puniceus, var. lucidulus, 
Gray, Synopt. Flora N. Amer. i. pt. 2, 195 (1884). A. puniceus, 
var. lucidus MacMillan, Met. Minn. 517 (1892). 
This is a good species, having shorter internodes than A. puniceus, 
smoother and more glossy leaves, more congested heads with pale 
! Systema Nat. ed. 10, 998 (1759). 
? Systema Nat. ed. 12, 263 (1767). 
? See also Farwell, Am. Mid. Nat. viii. 272 (1923). 
4 Sp. Pl. ed. 2, 492 (1762). 
5 Ruopora xv. 48 (1913). 
