64 Addisonia 



cipally by John Keynes and his successors at SaUsbury and by J. 

 T. West of Brentwood. The variety Douglas Tucker was brought 

 out by Keynes, Williams & Co., of Salisbury in 1913. 



The variety Douglas Tucker was grown in the dahlia border of 

 The New York Botanical Garden in the season of 1920, from roots 

 supplied by C. Louis Ailing, of West Haven, Conn, The drawing 

 was made, natural size, from a flowering branch, taken on September 

 17, 1920. Owing to the unfortunate loss of the roots during the 

 following winter, the description of the variety has been drawn 

 chiefly from flowers and foliage supplied through the courtesy of 

 Mr. Ailing and of Mr. I. S. Hendrickson, manager of John I^ewis 

 Childs, Inc., of Flowerfield, Long Island, New York. 



A low plant, commonly about three or four feet high, with small, 

 fully double, golden-yellow, carmine-tipped flower-heads of the 

 "pompon" type. The stems are smooth. The larger leaves have 

 three or five lobes or leaflets, a very few of the upper are simple; 

 the leaflets are dark green, short-pointed, and coarsely dentate, 

 the teeth cuspidate and the margins also minutely ciliolate-serrulate ; 

 the terminal leaflets are ovate to elliptic-ovate and sometimes 

 irregularly lobed towards base; the lateral are somewhat similar, 

 though smaller with a pronouncedly inequilateral, often cuneate 

 base; all are nearly smooth on both surfaces. The flower- heads 

 are mostly one and one fourth to one and three fourths inches 

 broad, are flattened-hemispheric and are held erect on strong 

 peduncles. The bracts of the outer involucre are usually five to 

 seven, ovate to ovate-spatulate, subacute or obtuse, and coriaceous. 

 The bracts of the inner involucre are mostly fourteen to eighteen, 

 oblong, membranaceous, pale-green or straw-colored, obtuse or 

 blunt-pointed. The ray florets are commonly about one hundred 

 and forty to one hundred and eighty-five in number and are spirally 

 arranged in eight to twelve series; their ligules are orbicular- 

 elliptic, but are cup-shaped or quilled by the involution and over- 

 lapping of their margins, the color is golden-yeUow, tipped with 

 varying amounts of Brazil-red or dragon's-blood red. The disk 

 florets are usually about fourteen to thirty-two and they are not 

 exposed until the late maturity of the flower-head. 



Marshal,!^ A. Howe. 



Note. — The species illustrated on plate 187, in volume 5 of 

 Addisonia, is Penstemon unilateralis Rydb., although the ac- 

 companying text, on pages 53 and 54, applies to Penstemon secundi- 

 florus Benth. We hope to publish later the text to accompany 

 plate 187, as well as an actual plate of Penstemon secundiflorus. 



