DATURAS SAFFORD. 547 



equal-sided at the base, especially those of the upper branches, acute 

 at the apex, and with the margins usually angulate but sometimes 

 entire. The flowers (see pi. 2) are large and funnel-shaped, often 

 double or triple, one corolla issuing from another; in the type form 

 pure white, but sometimes of a dirty whitish color, violaceous, red- 

 dish-purple, or purple on the outside and white within. The tubular 

 calyx, as seen under the lens, is minutely appressed-pubescent, with 

 five triangular, acuminate marginal teeth, and is usually about one- 

 third as long as the corolla. The corolla limb when fully expanded 

 is almost circular, normally with five equidistant radiating nerves 

 terminating at the margin in a short acute tail, but often 6-toothed, 

 and in the inner corollas of double flowers from 5 to 10-toothed. 



The tubercled or muricate globose fruit (see pis. 1 and 2 and figs. 1, 

 2, and 3) is borne on a short thick peduncle which is never erect as in 

 D. stramonium (pi. 6) but curved to one side, so that the fruit is at 

 length more or less inclined or nodding. The persistent expanded 

 base of the calyx is either reflexed or appressed to the pericarp, 

 which is not valvate, as in D. stramonium, but cracks open irregularly, 

 revealing a mass of closely packed, light brown, flat seeds which 

 nearly fill the interior. 



Type locality. — As to the mother country of Datura metel, Lin- 

 naeus states, in the first edition of his Species Plantarum (p. 179, 

 1753), "Habitat in Asia, Africa." In Hortus Cliffortianus, under 

 his description of the plant which formed the basis of the species he 

 is more definite : " Crescit in Oriente, in Malabria, Aegypte, etc. ; " 

 while in the second edition of Species Plantarum, where he identifies 

 his plant with Rumphius's Dutra alba, he extends its range to the 

 Island of Amboyna. Nowhere does he mention its occurrence in the 

 Canary Islands, as cited by Nees von Esenbeck, but it is very prob- 

 able that "Canara" (the district of Kanara, British India), men- 

 tioned by Rumphius as one of the localities of its occurrence, was 

 mistaken for the Canary Islands 1G by Willdenow, who, in the fourth 

 edition of Species Plantarum (p. 1009, 1797) adds this locality to 

 Asia and Africa ; and it is this edition of Species Plantarum and not 

 the first (where the species was originally established) that Nees 

 cites, when he rechristens the species and improperly transfers its valid 

 name to another. 



The illustration on page 544 (fig. 3), drawn by Mrs. R. E. 

 Gamble after Rumphius, shows the simple-flowered white dutra, 

 identical with the type of Linnaeus's D. metel, and a double-flowered 

 form identical with D. metel var. fastuosa. Rumphius states that the 

 white dutra (see fig. 1) is very common in India and grows to a larger 



16 Rumphius refers to it as follows : " Per totam fere Indiam, nota est haec planta, in 

 uno tamen loco masis nocet quam in altero, saltern quae in Canara Malabara crescit, multo 

 videtur efficacior esse Amboinensi & Moluocensi." — Herb. Amb., p. 243, 1747. 



