An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian . 15. Asclepias quadrifolia J acq. Four-leaved Milkweed. Fig. 3397. A. quadrifolia Jacq. Obs. Part 2. 8. pi. 33- 1767. Stem slender, simple, i°-2° high, usually leaf-less below. Leaves thin, sparingly pubescent onthe veins beneath, ovate to lanceolate, 2-6 long,h-2h wide, acute or acuminate, narrowed orrounded at the base, or the lowest pair muchsmaller, obovate and obtuse, the
An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian . 15. Asclepias quadrifolia J acq. Four-leaved Milkweed. Fig. 3397. A. quadrifolia Jacq. Obs. Part 2. 8. pi. 33- 1767. Stem slender, simple, i°-2° high, usually leaf-less below. Leaves thin, sparingly pubescent onthe veins beneath, ovate to lanceolate, 2-6 long,h-2h wide, acute or acuminate, narrowed orrounded at the base, or the lowest pair muchsmaller, obovate and obtuse, the upper and loweropposite, the middle ones usually verticillate in4s ; umbels 1-4, terminal, or rarely in the upperaxils; peduncles slender, *-2i long; pedicelsabout i long; corolla pink or nearly white, itslobes lanceolate-oblong, 2-3 long; column short:hoods white, obtuse at the apex, broadly 2-toothcdabove the base, twice as long as the anthers andthe short incurved horn; follicles erect on theerect fruiting pedicels, 3-5 long, glabrous. Woods and thickets, Maine and Ontario to Minne-sota, Alabama and Arkansas. CO ASCLEPIADACEAE. Vol. III.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
