458 PROCEEDINGS OP THE ACADEMY OP 



raroopo foliis alternis, integris amplexicaulis ovatis, obtusis ; floribus partis, 

 capitibm luteis. 



Southern Texas. May. 



Diffusely branching from the root; flowers on branches little elongated, on 

 which are a few small lanceolate or ovate bracts. 



Grows in a marly soil, hence the name from the Latin. 



Linsecomia. Gen. nov. Helianthid^e. 



Capitulum multiflorum heterogamum ; floris radii ligulatis neutris, 1-serialis 

 disci tubulosis hermaphroditis 5-dentatis ; involucri squamis 3 4 serialis, im- 

 bricatis adpressis ; exteriores ovalibus subacutis, interiores lanceolatis, acutis ; 

 receptaculum convexum subalveolatum ; paleis semiamplectentibus, oblongis, 

 apice ciliatis acutis; acheniis glabris, obovatis, corapressis, subquadrangulatis, 

 biaristatis ; aristis subpaleaceis, caducis. 



Linsecomia g 1 a u c a. Glabra, glauca ; foliis caulinis oppositis ; lanceolatis, 

 longe acuminatis, integris, sessilibus; radicalibus, sessilibus, aut breviter peti- 

 olatis ; caulis erectis, 10 12 policar. parum ramosis teretis. 



Near the ruins of the old Spanish Fort San Saba. Flowers last of June. 



Leaves 1J 3 inches long; chaff of the disk nearly as long as the tube of 

 the corolla, which, with the acheuia, is nearly encircled by a single palea ; 

 anthers small, ovate and erect ; rays slightly 2-cleft ; flowers yellow. 



In honor of Dr. Gideon Linsecom, a Texan botanist, to whom the Academy 

 of ^Natural Sciences of Philadelphia is indebted for a fine collection of Texas 

 plants. 



Halea r e p a n d a, s. nov. Annua ; scabroso pubescenti ; foliis radicalibus 

 breviter petiolatis, ovatis repando-denticulatis, superioribus longe petiolatis 

 ovatisve trilobatis petiolis subalatis, alis 2 3-dentatis; tubo corollse glabro ; 

 involucri squamis lato-ovatis, acutis margine albo-pubescentibus, receptaculum 

 conicum ; palae lanceolatae acuta; pappus paleaceus ; paleis ovatis subobtnsis. 



Near Corpus Christi. May. 



Plant 1 2 feet high; flowers 1J 2 inches in diameter ; achenia subquad- 

 rangular, crowned with a short scaly pappus ; scales oval, distinct and obtuse ; 

 petioles 1 li inches long, and leaves of nearly the same length ; rays about 

 twice the length of the involucre ; flowers yellow. 



Zexmenia (Lasianthea) hispidula, s. nov Strigoso-hispida ; foliis ovatis, 

 dentatis, petiolatis, stipulis ovatis vel lanceolatis, pedunculis axillaribus, solita- 

 riis vel ternis, nudis seu foliis summis capitulo longioribus ; involucri squamis 

 biserialis, subsequantibus, ovatis caneecenti pilosis ; acutis, ligulis aureis brevis- 

 simis, acheniis oblongo-obovatis, rugosis ; aristis divaricatis elongatis. 



Northern Texas. May. 



Plant with slender, decumbent stems, few leaves and simll flowers, almost 

 concealed by leaves <it the extremiiy of the branches ; rays scarcely longer than 

 the involucre; leaves all with petioles 4 8 lines long; whole plant sparingly 

 coated with white appressed hairs; palea of the disk prominent, linear, acute 

 and equal in length to the achenia; leaves 1 lj inches long and \ 1 inch 

 wide, sharply serrate and subacute; flowers 3 4 lines in diamettr; achenia 3 

 lines long. 



Verbesina T e x a n a, s. nov. Herbacea, ramoso ; ramis alis foliaceis auctis ; 

 foliis alternis, ovatis, subcrenatis ; petiolatis, petiolis lato-alatis, pedunculis 

 terminalibus, muhifioris, nudis, vel parum alatis ; involucri squamis linearis, 

 obtusis, acheniis radii, discique biaristatis. 



Northern Texas. May. 



Stems 2 3 feet high, erect and with few branches ; whole plant glandular 



[Dec. 



