240 CISTACEAE. . 
HUDSONIA. 
(Family Cistaceae). 
Low tufted villous shrubs cf 
dry regions: evergreen. Twigs 
very slender, terete: pith very 
minute. Buds scarcely evident 
except as short branches, without 
differentiated scales. lLeaf-scars 
lacking, the long-persistent leaves 
finally falling with the outer cor- 
tex. Leaves very small, alternate, 
narrow and pointed, much longer 
than the internodes: stipules 
lacking. Capsules, if present, 
narrow, scarcely surpassing the 
sepals. 
Hudsonia scarcely possesses 
horticultural merit, but it attracts 
attention when it is found grow- 
ing wild. 
1. Leaves short (2 mm.), appressed. (1). H. tomentosa. 
Leaves larger (3-6 mm.): fruit distinctly stalked. 2. 
2. Leaves moderate, rather gray, ascending. (2). H. ericoides. 
Leaves long, more spreading, green. (3). H. montana. 
Winter-characters are given for the related genus Helian- 
themum as follows: H. amabile. Schneider, f. 119. 4H. oe- 
landicum. Bosemann, 35. H. vulgare. Bosemann, 35. 
