Horticultural ami Systematic Varieties. 63 



(listingiiisliing feature of Solajium Dulcamara tomento- 

 sum, Veronica scutellata pubescens, Melissa officinalis vil- 

 losa, Galeopsis Ladanum canescens, Vicia lutea hirta, 

 Lotus corniculatus hirsutus, etc. 



The patches of color at the base of the petals are often 

 absent in Papaver orientale, in Erodium cicutarium and 

 many other plants. Such names as ocliroleuca, purpuras- 

 cens, integrifolia, serratifolia, angustifolia, latifolia de- 

 note varieties each one of which may recur in several 

 unrelated species. Finally I may mention the red berries 

 which occur as a varietal character in Empetum nigrum 

 and characterize the red variety of the gooseberry ; and 

 the yellow berries of Atropa Belladonna lutea and Daphne 

 Mezcreum album which are only selected examples from 

 a long series of such varieties. 



All these forms differ from their species in the fact 

 that a particular one of their characters is either devel- 

 oped to a greater extent {hirsuta, ciliata, purpurascens,) 

 or on the other hand very slightly developed or entirely 

 absent. 



The absence of a character may also be a case of ex- 

 treme rarity in the vegetable kingdom such as the straw- 

 berries without runners, and the peculiar Pinus Abies 

 aclada, with its tall absolutely unbranched stem, which 

 has been figured by Schroter.^ Fragaria resca mono- 

 phylla (Vol. I, Fig. ?)^, p. 193), Robinia Pseud-Acacia 

 rnonophylla, Fra.vinus Ornus monophyllar and a mo- 

 nophyllous form of Melilotus coerulea (Fig. 12 on page 

 87) belong to the same category. 



The varietal names enumerated above almost always 



occur, in svstematic works, in series which bcQin not with 



^ C. ScHROTER, Die ViclgcstaJtigkcit dcr Fichtc, 1898. pp. 52-53. 

 ^ A. Rraun, Verjuugung, § 332. Here also the earlier literature 

 will be found : and some facts concerning? Ruhus Jdacus tnoiiof^hyllus. 



