PENTANDRA. 



299 



names arenaria and typica. Subspecies arenaria is perhaps the more primitive, as sug- 

 gested by the absence of reduction in the leaves and bracts. It has migrated far north- 

 ward and is now restricted to the proximity of the coast from the Carolinas, or somewhat 

 farther southward, to New England. Every attempt made to separate this specifically 

 has failed because of the large series of variations in all essential characters in subspecies 



Table 26. — Variation in the fruiting bracts of the subspecies of Atriplex pentandra. 



Surface of bracts. 



Subspecies i 



Atlantic City, N. J 



Long Island, N. Y. (.Clute SZ4)- 



Groton, Conn. (Bissell) 



Rhode Island (Olney) 



Westport, Mass 



Seaview, Mass. (Williams) . 

 Katama Bay, Mass 



NY 

 NY 

 Gr 

 Gr 



7151 UC 



Gr 



78934 UC 



5.5to6.0 



5.0 



4.5 5.0 



4.0 5.0 



6.0t«7.0 

 5.0 

 4.0 



4.0 6.0 



5.5 5.0 7.0 

 4.2 4.2 



SO 4.0 6.0 



Average. 



. typica: 



Swan Island, Honduras 



Hort. Cantab.' 



Near Tampico, Mex. (Palmer SSS)' 



Breton Island, La. (Tract/ and Lloyd 4S). 



Miami, Fla. (Garber) 



Indian River, Fla. (Curtiss $367) 



Curacao (Britlon and Shafer 2926) 



Porto Rico (Britlon 4714) 



Porto Rico (Sintensis S9S6) 



Matanzas, Cuba (Brilton and Wilson BS) 



Grand Turk, Bahamas (Millspaugh 8998) . . . 



Little Creek, Andros, Bahamas (Brace 6300) 



Water Key, Bahamas (Wihon 8166) 



Atwood Key, Bahamas (Wilson 74SS) 



Subspecies d. muricata: 

 Mexico City. ...... 



Mexico (Palmer 1166)*. 

 Near Tehuacan, Puebla 

 Saltillo, Coahuila 



Gr 



Gr 



463276 US 



Gr 



Gr 

 Gr 



NY 

 NY 

 Gr 

 NY 



NY 



NY 

 NY 



NY 



4.0 

 2.8 3.5 

 2.5 3.0 



3.5 4.0 



4.0 4.5 



3.6 3.7 

 4.0 

 3.5 

 3.5 

 4.0 



4.0 

 4.0 4.5 

 3.0 3.5 



3.5 



4.0 5.0 

 4.0 4.8 

 4.5 5.0 

 4.8 

 4.5 

 4.0 

 5.0 



5.0 6.0 

 4.0 

 4.2 



Smooth, reticulated. 

 Crested, reticulated. 



Do. 

 Low-crested to smooth, 



ulated. 

 Crested, reticulated. 



Do. 



Do. 



Not crested, reticulated. 

 Crested, reticulations covered. 

 Not crested, reticulated. 

 Crested or smooth, reticu- 

 lated. 

 Crested, reticulated. 



Do. 

 Crests covering surface. 



Do. 



Do. 



Do. 

 Crested c 

 lated. 



Do. 



smooth, reticu- 



Do. 



Crested, reticulated. 



11037 UC 



48301 US 



Guaymas, Sonera (Palmer 119)^. 

 Average 



2 , 8 2-crested to smooth, not 

 reticulated. 



2.8 I 3.0 i Smooth, 3-nerved. 



3.5 ! 3.5 4.0 ! 3-nerved. 



3.0 [ 3.0 4.0 ; 2-crested to smooth, not 



I I reticulated. 



2.8 ; 2.8 Nearly smooth, 3-nerved. 



' Type of A. lexana Watson, minor variation 16. 



I Type of A. tampiccnsis Standley, minor variation 15. 



' Type of A. glomerala Watson, minor variation 9. 



« Type of A. pueblensis Standley, minor 

 ' Doubtfully determined. 



typica of the Gulf Coast and West Indies. The acceptance of arenaria as a species would 

 necessitate the use of criteria so trivial that consistency would demand the setting up 

 of a considerable number of other species from what is here described as subspecies 

 typica. Those best acquainted with the variations of typica, especially in the West 

 Indies, advise against treating these as species and the collections already available 

 indicate that such a course would lead only to confusion. A few species have been 

 described from this group. These are accounted for among the minor variations, where 

 the value of their characters is briefly discussed. The type of pentandra is a small, den- 



