82: Plants from Sinaloa, Mexico. [ZOE 
as to include the whole upper part and seeming in the mature 
fruit to be triangular: seeds smooth. 
Collected near Culiacan. A remarkable Ipomea and on ac- 
count of its deeply lobed corolla and broad margins of the dis- 
sepiments more worthy of generic rank than Quamodit, Phar- 
bitis, Se. 
Ipomcea megacarpa. Stems usually not twining, prostrate or 
ascending bushes, glabrous; leaves cordate with a broad, open 
sinus, long-acuminate, varying in outline from deeply sinuate- 
pinnatifid to pinnately parted nearly to the midrib into 5 narrow 
lobes, 4-7 cm. long, 5-8 cm. wide: petioles 1.5-4 cm. long; 
peduncle from the axil of the leaf, 6-8 cm. long, 1 rarely 2- 
flowered; pedicels 2 cm. long, striate, gradually increasing in 
size upward; sepals of fruiting calyx orbicular, 15 mm. in diameter, 
often apiculate, membranous, scarious-margined; ovary 2-celled: 
caspule equalling the calyx, flattened horizontally, 2 cm. in diam- 
eter, thin-chartaceous, splitting from the top irregularly; seeds 4, 
rounded, 7 mm. in diameter, glabrous; corolla white with dark 
purple throat, short-funnel-form, 5 cm. long, 6 cm. wide. 
Growing about Culiacan. Flowers open during the morning. 
Lpomea arborescens Don.? Very abundant about Culiacan and 
Cofradia. 
Lpomea leptotoma Torr. Altata to Cofradia. 
[pomea sinuata Ortega. Altata. 
Lpomea peduncularis Bertol. Culiacan, 
Ipomea filipes Benth. Cofradia. 
Lpomea spinulosa Brandg. Culiacan. 
Lpomea sp. Collected at Culiacan and Yerba Buena without 
fruit. It resembles /, scopulorum, 
Heliotropuim (Orthostachys) saxatile. Frutescent, erect, 
strigose-canescent, 4-5 dm. high, branched: leaves ovate-oblong, 
acuminate, sessile or nearly so, 2 cm. long, 5 mm. wide, margins 
revolute: flowers sessile in dense unilateral spikes 5-8 cm. long: 
corolla 4 mm, long, white; tube as long as the calyx; lobes 
short, broadly triangular; stigma tip conical, much shorter than 
the style: calyx lobes nearly equal, ovate-lanceolate, in age be- 
coming foliaceous and resembling the shorter, ovate bracts. 
