[Betula glandulosa X B. occidentaiis] - FNA 

 |Betula nana X B. occidentaiis] - KTZ 



Betula glandulosa Michx. - DornOl. Hartman06. FNA, HDH, SF!, UTF, W&W, E/W 



[Betula nana L.] - KTZ 

 Betula occidentaiis Hook. - DornO 1 , FNA, GFC, GPF, HDH, KTZ, UTF, E/W 



[Betula fontinalis Sarg.] - SF!, W&W 

 Betula papyrifera Marshall var. papyrifera - GPF, KTZ, E 



[Betula papyrifera Marshall] -DornOl, FNA, HDH, SFE, UTF, W&W 



* Betula pendula Roth - FNA, KTZ, UTF 



[WJ - an escape in Jefferson Co.] 

 JBetula pumila L.} - FNA, err. in ed.; DornOl (also dismisses its occurrence in WY) 

 {WJ - not in Colorado} 



{Betula ulaiuUilosa Michx. var. alandulilcra (Read) Glcason] - GIT 

 ilk'Lula pumila I., var. alandulilcra Read; - K 1/ 



Betula X utahensis Britton - FNA, KTZ, SFE, UTF, W&W fide formula, E 

 [Betula occidentaiis X B. papyrifera] - KTZ 



Corylus cornuta Marshall var. cornuta - KTZ, E 



[Corylus cornuta Marshall] - DornOl , GPF, HDH, SFE, W&W 

 [Corylus cornula Marshall subsp. cornuta] - FNA 



Bignoniaceae - BIG 



•&• Campsis radicans (L.) Seem, ex Bureau - IMF, KTZ, E/W 



[WJ - widely cultivated bur evidently never truly "escaping"! 

 [Campsis radicans (L.) Seem.] - GPF, SF!, UTF, W&W 



Catalpa speciosa (Warder) Warder ex Engelm. - KTZ<KS, NE, OK, UT> 

 [WJ - probably only rarely persisting as an escapee in our region] 

 [Catalpa speciosa Warder] - GPF, UTF 

 [Catalpa speciosa Warder ex Engelm.] - IMF 



Boraginaceae - BOR (including Ehretiaceae and HYD) 



{Amsinckia douglasiana A. DC.} - HDH, KTZ, W&W, misid. 



(Amsinckia intermedia Fisch. & C. A. Mey.} - GPF, HDH, IMF, UTF, W&W, misid. 



J Amsinckia menziesii (l.elim.) A. Nelson & Mncbr. var. intermedia (Fisch. & (". A. Mey.] Ganders - KTZ--AZ. 

 NE, UT, WY> 



* Amsinckia lycopsoides Lehm. - DornOl, GPF, KTZ, SFE, W&W, E 



•fr Amsinckia menziesii (Lehm.) A. Nelson & J. F. Macbr. var. menziesii - KTZ, E 

 [Amsinckia menziesii (Lehm.) A. Nelson & J. F. Macbr.] - IMF, SFE, UTF, W&W 

 [Amsinckia retrorsa Suksd.] - SFE, W&W 

 [Amsinckia rugosa Rydb.] - HDH 



* Anchusa azurea Mill. - KTZ, SFE, UTF, W&W, E 



* Anchusa officinalis L. - DomOl, HDH, IMF, KTZ, SFE, UTF, W&W, E 



* Asperugo procumbens L. - DornOl, GPF, HDH, IMF, KTZ, SF!, UTF, W&W, E/W 

 Buglossoides (see Lithospermum) 



98 



Snow.N. Januar\ 2[<W ( luckliM ol' V;;-l.iI;u I'luiilMil'llii: So.niiaii Kncki MnunUim i^iimii. iY\_:,io:i '■). 



