HOREHOUND (Marrubium vulgdre, L.). Flowers small, 

 white, crowded in dense clusters in the axils of the upper 

 leaves; calyx with 10 short teeth turned back and these and 

 the bracts becoming hooked at the tips. Leaves gray-green, 

 roundish, with prominent veins and wrinkles. Perennial 

 herbs with square white-woolly stems, in clumps a foot or two 

 high. Blooming from March until July, along roadsides and 

 in the neighborhood of settlements up and down the Pacific- 

 Coast. 



Horehound is not indigenous to the Pacific Coast but is so 

 sure to attract the plant collector's attention, that it deserves 

 mention. It probably came into California with the American 

 invasion, and from a root or two planted in some settler's 

 garden for use as a household tonic and remedy for colds, it 

 has spread amazingly. No introduced plant finds our Pacific 

 Coast conditions more exactly to its liking than this. In the 

 late summer and autumn when the seed vessels are mature, 

 the plant is a good deal of a nuisance, as the tiny hooks on the 

 calyces attach themselves to one's clothing, plastering it with 

 myriads of the little nutlets. 



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