350 



The Journal of Heredity 



FOUR TYPES OF STIZOLOBIUIM POD 



(b) is the China I>can, whose fine down can be seen on the ridge along the center, (a) 

 is from the first generation hybrid of Velvet by China, and is covered with sting- 

 ing bristles, which are also best seen along the median ridge, (c) is the Velvet 

 bean, covered by white-tipped, dark tomentum, while (d) represents the plants 

 with fine black tomentum, which apjiear in the second generation and are called 

 by the writer "smooth black." These pods seem glabrous to the eye, liut the 

 tomentum can be seen on young pods and (with a lens) in sheltered angles of the 

 dry pods. This particular pf)d (d) came from a fourth generation plant. Photo- 

 graphs natural size. (Fig. 8.) 



Thf blackish hull of the Lyon Ix'an 

 is made jj;ray by an abundance of fine 

 whitish ai)]jrcsscd downy hairs, the 

 longest of which arc but little more than 

 half a millimeter. A part of a ])od is 

 ma^'nificd in the center of Fi}^. 9. A 

 single hair is seen in the second ])\acQ 

 in Fig. 15, and some of the fresh down 

 from a nearly full-grown ])od is photo- 

 graphed in Fig. 12. Even on these fine 

 hairs minute knobs may be seen with 

 the microsco])e, as well as a little gvimmy 

 substance within the sharj) tip. The 

 down of the China bean resembles that 

 of the Lyon, but is a trifle longer. Part 

 of a China pod is magnified on the 

 left of Fig. 10, and a single hair is shown 



in the third ])lace in Fig. 15. The 

 Yokohama bean has longer and silkier 

 ajjpresscd down, which is usually yel- 

 lower, btit is otherwise similar. A jDart 

 of a Yokohama ])od is shown magnified 

 on the right of Fig. 9, and a single hair 

 of about the maximum length is photo- 

 graphed in the fourth place in Fig. 15. 



HYBRID STINGING PODS 



The pods of the first-generation hy- 

 brids of the Velvet with the Lyon, 

 Yokohama, and China, are closely 

 covered with more or less appressed 

 stinging bristles, mostly grayish yellow, 

 btit usually with a jjatch of red at the 

 base of the ixxl. One of the pods is 



