70 JOURNAL OF THE ARNOLD ARBORETUM [vol. m 



by Fernald var. hypoglauca. I am not yet convinced that there is a good 

 variety with leaves green on both surfaces which according to Fernald 

 should be taken for the type. The specimens of it mentioned by Fer- 

 nald need further observation. His var. tenuescens is in my opinion 

 nothing but a mere form. 



87a. S. pedicellaris f. tenuescens, stat. now — S. pedicellaris var. ten- 

 uescens Fernald. — See Schneider in this Jour. n. S L 2. 



88. S. prolixa Andersson. — See Schneider in this Jour. n. 82. 



89. S. fuscescens Andersson. — See Schneider in this Jour. n. 83. 



89b. S. fuscescens var. hebecarpa Fernald. — See Schneider in this 

 Jour. II. 84. 



Sect. XIX. Grlseae Horrer. — See Schneider in this Jour. n. 14. 



90. S. sericea Marshall. — See Schneider in this Jour. n. 14. 



91. S. coactilis Fernald. — See Schneider in this Jour. n. 16. 



92. S. petiolaris Smith. — See Schneider in this Jour. n. 16. 



92b. S. petiolaris var. rosmarinoides Schneider in this Jour. n. 19. 



93. S. humilis Marshall. — See Schneider in this Jour. n. 20. 



93b. S. humilis var. rigidiuscula Robinson & Fernald. — ? S. humilis 

 var. longifolia f. rigidiuscula Andersson. — See Schneider in this Jour. II. 

 22. In his Fl. Europ. xxi. 168 (1890), Gandoger proposed under S. 

 tristis four subspecies S. dasytricha, S. graciliflora, S. iodanthcra and S. 

 leucodendron which partly are nothing but typical S. tristis. Some may 

 represent hybrids or forms of S. humilis. 1 



94. S. tristis Aiton. — See Schneider in this Jour. ii. 24. 



Sect. XX. Discolorks Barratt. — See Schneider in this Jour. n. 2. 



95. S. discolor Muhlenberg. — See Schneider in this Jour. n. 2. 



95a. S. discolor f. rigidior Anderson. — See Schneider in this Jour. n. 



3. 



95b. S. discolor var. latifolia Andersson. — See Schneider in this Jour 



II. 3. 



96. S. Scouleriana Barratt.- — See Schneider in this Jour. n. 6. 



96a. S. Scouleriana f. poikila, stat. nov. — S. Scouleriana var. flares- 

 cens J. K. Henry. — S. Scouleriana var. poikila Schneider in Jour. Arnold 

 Arb. ii. 12 (1920). 



96b. S. Scouleriana var. crassijulis Schneider in this Jour. n. 12. 

 S.(aurita?) brachystachys Andersson in Of v. Svensk. Vet.-Akad. Forh. 

 xv. 121 (1858); in Proc. Am. Acad. iv. 60 (Sal. Bor.-Am. 15) (1858); in 

 Walpers, Ann. Bot. 749 (1858). 



97. S. paradoxa Kunth. — See Schneider in Bot. Gaz. lxv. 35 (1918). — 

 As I have already stated (in this Jour. n. 13 (1920]) this Mexican species 

 needs further observation. In Herb. Berol. I have seen some interesting 

 specimens which probably belong to it. There is also Khrenberg's No. 

 266 from Mineral del Monte (State ?) of which the pubescence of the 



l S. humilis var. keweenawensis Farwell in Rep. Mich. Acad. Sci. vi. 206 (1904). 

 This form not mentioned by Schneider is described as a low form with the mature 

 leaves densely tomentose. — Ed. 



