120 University of California Puhlications in Botany [Vol. 5 



This description seems to approximate variety I of our experi- 

 mental material most closely. Comes (1899, p. 39) recognizes 

 under N. acuminata "variety grandi flora" and "variety parvi- 

 flora." With the first of these we connect our large-flowered 

 form (variety I) and with the second the form in which the 

 corolla diameter is intermediate in size (variety II). Comes 

 gives no definite measurements of flower size for varieties 

 " grandiflora" and "parviflora" but the fact that he does recog- 

 nize two cultivated varieties principally distinguished from one 

 another in respect to corolla diameter makes it seem justifiable 

 to identify the two cultivated varieties among our three parental 

 types wath those he names. 



The small-flowered form (variety III) was first noticed in 

 the University of California Botanical Garden some four or 

 five years ago and it is possible that the original seed was sent 

 from Fort Bidwell, California. At least, the small-flowered form 

 was first noticed in a portion of the Botanical Garden in which 

 the Fort Bidwell seed w^as originally sown (1903?). One N. 

 acuminata plant came to maturity in that same part of the 

 garden this past summer (1911), and a measurement of its 

 flowers showed that a fairly small fluctuation in corolla diam- 

 eter was operative in this type, w^hich has been self-sowing itself 

 for seven or eight years. Only eleven flowers were measured and 

 their corolla diameters varied between 13 and 17 mm., with the 

 average diameter approximately 15 mm. It seems probable that 

 our small-flowered variety III is a particular form which has 

 become segregated from among the plants which, in some genera- 

 tion previous to 1908, grew from the seed originally sent from 

 Fort Bidwell. In 1908 the striking and uniformly small flowers 

 borne by some one of the plants in the original garden plot 

 attracted attention, and since that year variety III has been 

 propagated by pure seed and has come true each year to uni- 

 formly small flowers on all its plants. 



Plate 29 is drawn from fresh material of variety II of our 

 parental types. Figure 1 shows a typical lateral from a vigorous 

 plant with the narrowly lanceolate cauline leaves, secondary 

 lateral shoots, a fully opened flower, a number of buds at the 

 top and maturing seed capsules, all one-half natural size. Figure 



