594 SAXIFRAGACE^. Philadelphus. 



1-2 inches long, ovate, simply serrate with broad mucronate teeth. Cymes 

 shorter than the leaves : bracts subulate. Calyx ])ersistent, cleft rather 

 below the middle ; the segments mostly acute, two of them somewhat nar- 

 rower ; one of the broader ones sometimes minutely 3-toothed at the apex. 

 Petals twice or more the length of the calyx. Stamens deciduous. Styles 

 more than twice the length of the ovary, much exserted beyond the calyx. 

 Ovary free, except the base, the parieties rather thick and firm ; the dis- 

 sepiments very short ; the placentae lunate, at first distinct, many-ovuled. — 

 We much regret that we have not more adequate materials for describing 

 this plant. Our specimens were collected by Dr. Edwin .Tames (in Long's 

 Expedition), but the particular locality is not recorded. It is probably rare 

 or very local, as no other botanist seems to have met with it. It appears to 

 be an entirely distinct genus, to which we have applied the present name in 

 commemoration of the scientific services of its worthy discoverer, the bota- 

 nist and historian of ' Major Long's Expedition to the Rocky Mountains, in 

 the year 18-20,' and who, during that journey, made an excellent collection of 

 plants under the most unfavorable circumstances. 



Suborder IV. PHILADELPHEiE. 



Ord. Philadelpheae, Don, DC, (excl. gen.) 



^Estivation of the petals convolute. Capsule opening by locu- 

 Hcidal dehiscence. — Shrubs, with opposite and simple exstipulate 

 leaves. 



17. PHILADELPHUS. Linn. ; Lam. ill. t. 420 ,• Geertn.fr. t. 35. 



Tube of the calyx obovate-turbinate, adherent to the ovary ; the limb 

 4-5-parted, persistent. Petals 4-5, broadly obovate, convolute in festivation. 

 Stamens 20-40, shorter than the petals: filaments filiform. Styles usually 

 4, more or less united, sometimes nearly to the summit : stigmas oblong or 

 linear. Capsule mostly 4-celled, free at the summit, 4-valved, loculicidal ; 

 the placenta projecting into the cells, many-seeded. Seeds pendulous and 

 densely imbricated downwards on the thickened placenta, scobiform ; the 

 testa membranous and loose, subulate-attenuate at the apex, and with a short 

 lacerate appendage next the hilum. Embryo nearly the length of the thin 

 fleshy albumen : radicle cylindrical, much longer than the oval flattish 

 cotyledons. — Shrubs (natives of North America and Japan ? or Central 

 Asia?), with opposite often serrate exstipulate leaves, and large racemose- 

 cymose or solitary (white) flowers. 



-f 1. P. inodorus (Linn.) : glabrous; leaves ovate or ovate-oblong, obtuse at 

 ' the base, acute or somewhat acuminate, triplinerved, entire or very nearly 

 so ; flowers (rather small) 1-3 at rhe extremity of the branches ; segments of 

 the calyx triangular-ovate, acute, about the length of the tube ; style longer 

 than the stamens.— Z-inn. sjyec. 1. p. 470 {Catesb. Car. 2. t. 84) ; Walt. Car. 

 p. 146,- Willd. spec. 2. p. 948; Bot. mag. t. 1478. 



Carolina to Alabama, apparently confined to the upper country and some- 

 what rare. Near Milledgeville, Georgia, Dr. Boykin ! Upper part of 



