10 PLANT NAMES AND SYNONYMS 



j. A. pycndntha Benth. Australia. Golden Wattle. Bark yields 

 a fine quality of cutch. « 



k. A Senegal Willd(A. Verek Guil. & Per.) Kordofan to the 

 Senegal. Gum Arabic tree, Acacia. Gummy exudate of this 

 and other species is gum acacia or gum Arabic; Acacia, U. S. 

 P., Acaciae Gummi, Br., Gummi arabicum, Gummi mimosae, 

 P. G. ; Ger. Arabisches Gummi, Mimosen-gummi; Fr. Gomme 

 arabique vraie ( Codex ) ; Sp. Goma arabiga. ^ Mucilaginous, 

 demulcent. 



I. A. Sunin (Koxb. ) Kurz (Mimosa Sunia Eoxb., A. Catechu W. 



& A., not Willd. ). Southern India. Source of part of the 

 Catechu of commerce. Other species of Acacia yielding gum are 

 (m. ) A. Ehreubergidna Hayne, Arabia and upper Egypt, 

 Seyah; (n. ) A. Seyal Delile (A. fistula Schweinf. ), Thii-sty 

 Thorn and (o. ) A. tortilis Hayne called Seyal or Seyaleh. 

 Commercial varieties of gum are Hashabi or Kordofan pum, 

 Sennaar or Sennari gum, Gedda or Jidda gum and gum Tor 

 or Turic, besides those already mentioned. The finest selected 

 white gum is known as Turkey gum. 



8. ACAENA, L. - Acaena. - Rosaceae. 



Syn. Ancistrum, Forst. Herbs, some shrubby. About 40 

 species. New World, especially S. America, to Australia; 1 in 

 U. S. 



9. ACALYPHA, L. Three-seeded Mercury. Eupliorbiace*. 



Greek name of a Nettle. Syn. Cupameni, Adans. Herbs 

 or shrubs. About 230 species, mostly tropical and sub-tropi- 

 cal; 9 in U. S. 



a. A. Yirginica L. Ontario and eastern U. S. Mercury- weed, 

 Virginia Three-seeded Mercury §. Plant reputed expectorant 

 and diuretic. 



10. ACAMPTOPAPFUS, A. Gray. - - Compositie. 



From Greek, ''rigid pappus." Syn. Aplopappus, (Haplo- 

 pappus) in part. Low desert shrubs. Two known species, 

 both in southwestern U. S. 



II. ACANTH<iCHITON, Torr. Acanthochiton. Amaraiithaeeae. 



From Greek, "Thorny Cloak. " Dioecious herb, one species. 

 Texas to Arizona. 



12. ACANTHOmInTHA, a. Gray. Acanthomintha. Labiatae. 



From Greek, "thorny Mint." Low annuals. Two knowa 

 species. Pacific Coast, L. S. 



13. ACANTH6sCYPHUS, Small. - - Polygonaceae. 



From Greek, "thorny cup. 1 in U. S. 



14. ACANTHOSPERMUM. Schrank. - - Compositae. 



From Greek, "thorny seed." Syn. Centrospermum, H. B. 

 K. DiflTuse annuals with bur-like fruit. About 5 species, tro- 

 pical regions; 2 nat. in U. S. 



