32 BOTANICAL GAZETTE [january 



tantum ad apicem sparse pilosi, ceterum ut supra 

 sub S. stolonijera indicata 



17. iS*. stolonijera f. suhpilosa 

 Stigmata brevia vel oblonga sed vix linearia vel 

 plantae aliis signis diversae. 



Folia subtus (in sicco) paullo pallidiora (baud 



distincte glaucescentia vel albescentia), leviter 



elevato-nervata sed vix reticulata, laevia, 



petiolis vix 5-6 mm. longis instructa, vulgo 



lanceolata vel elliptico-lanceolata, utrinque 



acuta vel apice obtusa, superne stomatifera et 



interdum fere inciso-nervata, etiam maxima 



vix ad 4:1.8 cm. magna, integerrima (rarissime 



versus basim parce denticulata) ; stipulae 



nullae vel minimae, caducae; amenta (pedun- 



culo excluso) 2-4 . 5 (in var. caespitosa interdum 



ad 6) cm. longa et fructifera ad 1.3 cm. crassa; 



ovaria subsessilia, dense sericeo-villosa; stylus 



distinctus, saepe apice breviter bifidus, stig- 



matibus oblongis bifidis vulgo duplo rarius 



3plo longior; glandula ventralis oblonga, 



ovoideo-conica; fructus pedicello brevi glan- 



dulam siccam subaequante excluso 4-5 mm. 



longi; fruticulus ramulis hornotinis flavescenti- 



bus tenuibus satis brevibus. . .13. S. petrophila 



Folia subtus distincte discoloria, glaucescentia, 



pruinosa, superne baud stomatifera vel majora, 



diversiformia vel plantae aliis signis diversae.^ 



Glandula ventralis satis brevis et lata, vix 



duplo altior quam lata, apice late truncata, 



pedicello fructuum duplo brevior; amenta 



submatura vel fructifera (3-) 5-10 : i. 2-1.6 



cm. magna; ovaria tenuiter villoso- 



tomentella; styli distincti, apice bifidi, stig- 



= It is difficult to indicate in such a key the differences between S. petrophila and 

 S. anglorum and its different forms with sufficient clearness. See my remarks under 

 those species in my first paper {I.e.) . 



