BOTANICAL EXCURSION TO NORTH CAROLINA. 49 
belongs to Zigadenus.! The Melanthiwm Capense (Andro- 
cymbium, Willd.) was added some time afterwards. 
The rocky summits of the mountains afforded us Sedum te- 
lephoides ; Heuchera villosa ; Paronychia argyrocoma, which 
forms dense silvery tufts on the highest and most exposed 
peaks ; Veronica officinalis, serpyllifolia, and agrestis (all 
certainly native); Lycopodium rupestre, in a very beautiful 
state, and on the Phenix Mountain we found a solitary speci- 
men of L. Selago ; Arabis lyrata, with perfectly accumbent 
cotyledons ; Potentilla tridentata, which we only saw on the 
Bluff Mountain; Woodsia Ilvensis ; Saxifraga leucanthemi- 
folia, which not unfrequently attains the height of two feet, 
with a large and slender effuse panicle; Diervilla trifida, 
entirely resembling the northern plant ; Pyrws melanocarpa ; 
Sorbus Americana, B. microcarpa; Rhododendron Cataw- 
biense, just out of flower, while &. maximum, extremely 
abundant along the streams and mountain sides, was only be- 
ginning to expand its blossoms.? In such situations also we 
found a marked dwarfish variety of Hedyotis purpurea, grow- 
ing somewhat in tufts, and scarcely exceeding four or five 
inches in height. The flowers, which are deep pink, while in 
the ordinary form in this region they are nearly white, pre- 
sent the dimorphism which obtains in several sections of the 
genus ; the stamens in some specimens being inserted in the 
throat of the corolla and exsert, while in others they are in- 
serted near the base of the tube and included; in the former 
- the style is uniformly short and included, and in the latter 
long and somewhat exserted. These two forms were often 
seen growing side by side, and appeared to be equally fer- 
tile. The Amianthium musceetoxicum, which is common in 
the low country of the southern States, we here found only 
1 The Helonias glaberrima, “ Botanical Magazine,” t. 1680, on which Zi- 
gadenus commutatus of Schultes is founded, is Z. glaucus ; the specimens 
came from Fraser’s nursery, but doubtless were not derived from the 
southern States. Helonias bracteata, “ Botanical Magazine,” t. 1703, is 
Z. glaberrimus, Michx., not fully developed. 
2 These shrubs bear the name of “ Laurel” ; while the Kalmia lati- 
folia is universally called “Ivy,’’ or “ Ivy-bush.” 
