LOGANIACE^. 235 



2. GONOLOBUS. Mich.— Gcnolohus. 



(Froin4,he Greek yo^K!^] an angle, and Xo/3jj, a, pod; on account of its angular 

 follicles.) 



Calyx 5-parted, the sepals spreading. Corolla rotate, 5- 

 parted. Stamineal crown scutelliform, 5-lobed. Anthers 

 opening transversely, terminated by a membrane. Pollen- 

 masses 5 pairs, not separating into grains. Stigma flattish- 

 depressed. Follicles 2, ventricose, somewhat ribbed. Seeds 

 comose. 



1. G. macrophyllus Mick. : stem hirsute with long hairs; leaves broadly 

 ovate-cordate, with the sinus nearly closed, acuminate, finely pubescent, 

 at length smoothish above ; segments of the corolla linear or Unear-oblong, 

 with the margin reflexed ; follicles ribbed and angled, G. obliqiius Drown. 

 Cijnanchum obliqmim Muhl. 



Near Philadelphia, Barton. Chester county, Penn. Darlington. July. 11-. — 

 Stem several feet long, twining. Flowers in loose cymose umbels, purple and 

 greenish, fetid. Large-leaved Gonolohus. 



2, G. hirsutus Mich. : stem twining ; younger branches very hairy ; 

 leaves cordate-ovate, or ovate-roundish, attenuate or somewhat obtuse, 

 hairy on both sides ; peduncles shorter than the petiole, few-flowered ; seg- 

 ments of the corolla oblong; follicles muricate. Gonolobium hirsidum 

 Pursh. 



Hedges near streams. Penn. to Car. PursA. June, July. %.. — -S<e?n trailing 

 and climbing, 3—4 feet long, pubescent. Leaves slightly auriculate at base. 

 Umbels axillary, 3 — 4-flowered, Flowers dark purple. Hairy Gonolohus. 



Order LXXX. LOGANIACE^.— Loganiads. 



Calyx inferior, 4 — 5-parted. Corolla regular or irregular, 

 4 — or 10-cleft. Stamens 5, arising from the corolla. Ovary 

 2 -celled ; style continuous ; stigma simple. Fruit capsular, i 

 drupaceous or berried. Seeds usually peltate, sometimes 

 winged, with fleshy or cartilaginous albumen. — Shrubs, herba- 

 ceous plants or trees. Leaves opposite, entire, usually with 

 stipules in the form of interpetiolary sheaths. 



SPIGELIA. Zywm.— Worm Grass. * 



(In honor of Adam Spigelius, an old botanist of considerable note.) 



Calyx 5-parted, persistent; the segments linear-subulate. 

 Corolla funnel-form, 5-cleft. Stamens 5. Anthers linear, 

 erect, 2-lobed at base. Capsule ovoid-compressed, didymous, 

 2-celled, few-seeded. 



S. Marylandica Linn. : stem simple, square, smooth ; leaves opposite, 



