SCIRXIJI-K; AMI) rOPULAR. 305 



1661. PRIOISOPSIS, Xutt. Prionopsis. tonipositee. 



From Greek, "saw like" , alluding to leaf maygins. Syn. Donia, 

 Aplopappus (Kew), in part. Herb with large heads of yellow 

 flowers. One species, Kansas to Texas. 



1662. PRIVA, Adans. Priya. Verbeiiaeeae. 



Perennial herb^. About 10 species, warmer regions of both 

 hemispheres; 1 in U. S., viz. (a) P. eohindta Juss., Brazil 

 to Florida, Styptic-bur, Velvet-bur. 



1663. PROSERPINACA, L. Mermaid-weed. Haloragidaceae. 



From Latin, "forward creeping". Aquatic herbs. Two 

 species, both of eastern U. S. to AVest Indies. 



1664. PR0S<3pIS, L. Mesquit. Miinosaceae. 



Ancient Greek plant name, meaning a "face". Syn. Algaro- 

 bia, Benth.; Acacia, Mimosa, in part. Trees or shrubs, usually 

 thorny. About 20 species, warm or tropical regions; 3 in U. S. 



a. P. juliflora (Swz. ) DC. (M. juliflora Swz., Acacia juliflora 

 Willd. Alg. juliflora Heyne; includes P. glanduloea Tor.). 

 Southern U. S. to Mexico and West Indies. Mesquit (Mes- 

 quit e, Mezquite, Meskit), Honey Mesquit, Honey-pod, Honey 

 Locust* Locust Mesquit, C'ashaw, July-flower (Jamaica), Alga- 

 roba (Algarroba). Saccharine pods (algarobo, i. e. carob) used 

 for fodder. See Ceratonia. Flowers yield abundant honey. 

 Gvmviy exudate, Texas Mesquit gum. The bark of the South 

 American Algaroba, (b) P. diilcis Kunth (Alg. dulcis 

 Benth.), Algarobilla bark, is used for tanning. 



c. P. odorata Tor. & Frem. (P. pubescens Benth.). Mexico to 

 California. Screw Bean, Screw-pod Mesquit, Tornillo. 



1665. PR6tEA, L. Cape Honeysuckle, etc. Proteaceae. 



Named from Proteus of ancient mythology. Shrubs with 

 flowers in dense cone-like heads. About 80 species, mostly of 

 S. Africa, (a.) P. mellifera Thunb. Cape Honeysuckle, 

 Honey-flower, Sugar- bush. The nectar used for coughs. 



1666. PROTIUM, Burm. 1768. Caranna, etc. Biirseraceae. 



Syn. Icica, Aubl. 1775, Dammara, Gaertn. 1791, not Lam. 

 1786; Amyrif*, in part. Balsamic trees. About 50 species, 

 tropical regions of Old and New World. 



a. P. Carjina (H. B. K.) March (I. Carana H, B. K., I. Caranna 



Auct. ). Brazil. Caranna tree. Oleoresin from this and other 

 species is called Cai-anna. 



b, P. heptaphyllnm (Aubl.) March (I. heptaphylla Aubl., L 



Tacamahaca H. B. K. ). Northern S. America. Hyawa tree, 

 Incense-wood. Resinous exudate, Tacaiftahac; Fr. Tacamahaca 

 (R^sine), Tacamaque terreuse (Codex). Used like Burgundy 

 pitch. 



e. P. IcicarJba (DC.) March (L IcicaribaDC. ) • Brazil. Source 

 of Brazilian Elemi. 



1667. PRUNELLA, L. (Brunella). Self-heal. Labiatae. 

 From Latin, "quinsy wort" . Herbs. About 5 species^ 



widely distributed; 2 in U. S. 



