50 Addisonia 



slender, and the bisymmetrically irregular form of each, its contrast 

 of color — the lavender- violet changing abruptly to the white tip — 

 and the densely yellow beard of the projecting sterile filament, make 

 a study of artistic interest. No beard-tongue has a narrower throat 

 than this. 



The hairy-stemmed beard-tongue is a native of the northeastern 

 states from southern Vermont to Virginia and west to southern 

 Michigan and Kentucky. It grows in dry fields, barren or sandy, 

 and, at least in the eastern portion of its range, is found only at 

 scattered stations. It is not an aggressive plant of cultivated 

 pastures and meadows as is P. Digitalis, and hence is more rarely 

 seen. This is the only species of Penstemon native to the region 

 near New York and Philadelphia. 



That this is a plant easy of cultivation our experience here at 

 the New York Botanical Garden has proved. We have long grown 

 this species in an open bed, with ordinary loam soil, and it is 

 from such plants, of uncertain derivation, that the accompanying 

 drawing has been made. 



Francis W. Pennell. 



Explanation OF Plate. Fig. 1. — Flowering stem. Fig. 2. — Flower opened. 

 Fig. 3. — Anther, front view, X 6. Fig. 4. — Anther, rear view, X 6. Fig. 5. — 

 Anther, after opening, X 6. Fig. 6. — Fruit. Fig. 7. — Seed, X 8. 



