• anthers of a flower all the same size
• filaments straight
• style straight (photo at left)
• filaments angle out at 45 degrees during hermaphroditic state (photo at left).
• fruit remains attached after it ripens

• undehisced anthers of a flower vary in size (photo at left)
• filaments curved to sigmoid (evident after filaments elongate, so not shown in photo at left)
• style curved
• fruit remains attached after it ripens

• hirsute
• filaments usually do not angle out (photo at left), but when they do, not more than 15 degrees
• 5-lobed corolla
• fruits partially hidden in side view by the calyx which remains green (photo at right)
• fruits drop at maturity

• flowering calyx to 7.5 mm in diameter
  
• calyx lobes recurved both lengthwise and in cross section (photo at right)
  
• corolla 5-lobed (photo at left)
  
• fruiting calyx recurved (photo at right) and lobe radius to 6 mm

• mature plant glabrous except for lower half of filaments which are pubescent
  
• stems having projecting acute-angled longitudinal ridges
  
• corolla has 5 lobules in addition to 5 lobes
• fruiting calyx an inverted funnel hiding the berry in side view (photo to right)

• densely velutinous
• peduncle shorter than 11 mm
• corolla 34 - 38 mm in diameter (hermaphroditic state)
• undehisced anthers longer than 2.8 mm
• stigma large (1.0 by 1.5 mm in overhead view).
• large pollen 42.5 - 46.25 µm diameter
• fruit large

endemic to one area of Michoacan, Mexico

• peduncle long (type specimen)
• corolla maculae extend (on type specimen) most of the way out to tip of corolla lobe
• high altitude
• photos shown, left and right, are from high altitude plants collected in Guatemala
• field work is needed to determine if J. laxa is a distinct species or merely an ecotype of J. procumbens

• leaves very large and somewhat leathery
• style curved
• lacking a pistillate phase