APPENDIX. 303 



duced it into the first and succeeding editions of my Manual as 

 tbe A. serp. (3 tenuior of Koch. Recently I have been led to pay 

 more particular attention to it, and incline to the opinion that 

 those botanists are correct who separate it specifically from A. 

 serpillifolia. The most palpable difference between them is found 

 in the size of nearly all their organs, although the plants are of 

 about equally vigorous growth. A. leptoclados has leaves, flowers, 

 and fruits of about half the size of those of A. serpillifolia, which 

 has the effect of giving the plant a much more slender appear- 

 ance. 



Tenore was the first botanist who specifically distinguished 

 the plants ; for in his Relaz. del Viag. di Abruzzo, p. 66, pub- 

 lished apparently in 1830, he described his A. sphmrocarpa as 

 distinct from what he supposed to bo the A. serpillifolia of Lin- 

 naeus. I have not seen that work, but find an account of the two 

 plants in his Sylloge PI. Floras Neapolitans, p. 219. He there 

 tells us that A. serpillifolia [our A. leptoclados'] "a sequente" 

 A. sphmrocarpa [our A. serpillifolia] " dignoscitur laciniis caly- 

 cinis lanceolato-cuspidatis, nee late ovatis;" and under A. sphm- 

 rocarpa he says, " magnitudine et forma capsularum a simillima 

 A. serpillifolia primo intuitu diversa deprehenditur ; a qua tamen, 

 sepalis ovatis caule pedunculisque plerumque erectis, aliisque 

 notis facile dignoscitur." 



Gussone adopted Tenore's names in his Fl. Siculm Synopsis 

 (i. 495), but in the Addenda to that work (p. 824) he alters them, 

 from having learned that the A. sphmrocarpa is the true A. 

 serpillifolia of Linnaeus, and gives the name of A. leptoclados to 

 his and Tenore's A. serpillifolia. This nomenclature and separa- 

 tion of the plants is now followed by continental botanists. 



But there remains another plant to be noticed, to which the 

 A. serpillifolia which grows near Wisbech (but of which I possess 

 no specimen) may belong. It is the A. Lloydii of Jordan, which 

 closely resembles the true A. serpillifolia, from which it is very 

 possibly not distinct, but has elevated ribs on its sepals in place 

 of the rather faint nerves of its allies. 



These plants may be characterized as follows : 



1. A serpillifolia (Linn.) ; leaves ovate, acute, roughish, 

 sessile ; petals shorter than the calyx ; sepals ovate-lanceo- 



